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Jim - That link is a good one. I read all 7 pages. (It is a shame it doesn't qualify as a bona fide microanalysis.) Anyway, it has the info needed on pedals if I want to buy one, although I'm more likely to move the pin myself. But, I never would have thought of it, so thanks!
As for KISS, the second "S" refers to me. Yes, y'all have my number.
On the brake boost. There should be some documentation on that system that includes info on the brake pedal attachment. Maybe in the folder with Brake Info, maybe in a box. Might be on the Hydroboost web page, can't remember for sure. I do remember it wasn't going to be a chore to attach it to the Brake Pedel
In any case that CPP MC and the Hydroboost were put together at the Hydroboost plant to fit an 85 F250, 460ci. They assured me it would work. I think (not sure) the hoses you will need for plumbing the hydroboost are also in the parts stack.
Truthfully, after i bought it all, I was having second thoughts about using it..
Gary, that HB unit looks to be some kind of aftermarket deal, not the F450 unit. It occurs to me that if it is marketed as an upgrade to the stock vacuum booster that it would be engineered to work with the vacuum pedal. But that is an assumption. I would try to get some manufacturer's info on it, because Ford had at least two different vacuum pedals... one for the "deep" HD F250/F350 booster and another for the "flat" F150 style booster. You might need a F250 vacuum pedal??? Ultimately the pedal pin should give you a good, straight alignment with the booster rod, so it may be as simple as that. I just would not necessarily assume that since it is hydroboost that it needs the F450 pedal.
As far as the second return port, there are several ways to handle it, but this is one solution that I found that I really like:
Here is a link to the thread on HB conversion and the parts used for the dual return filter set up:
The master cylinder is a Classic Performance Products MCPV1, and is either the CP31500 (1" bore) or CP31501 (1 1/8" bore). And I haven't been able to tell which nor find the receipt for its purchase, so may have to disassemble it to find out. (Vern - Any ideas where to look?)
And the booster is from Hydratech Braking, although I don't have a model # yet. Vern said the master was spec'd by Hydratech to work with that booster on Big Blue. But, I'd like to use it on Dad's truck, so will need to figure out the bore size and if that is compatible.
Jonathan - Thanks. I'll read that thread from the link and will study the diagram. As for the pedal, the thread from the link Jim provided, which Vern already had printed in the documentation, indicates that the hydro booster Ford used needs the extra leverage of the F450 pedal. But you have a point, Hydratech may have engineered their booster to use the standard pedal. In fact, I would bet that's the case as I find no mention in their info about changing the pedal. I'll have to contact them to find out.
EDIT: Looks like it is this booster. And nothing is said about changing the pedal. In fact, they say it "Features an adjustable brake pedal rod to allow for a range of brake pedal height adjustment". And, the hose kit was included.
Right, but which "standard" brake pedal Gary? I have a hunch that Dad's will have a lower pin than Big Blue. If that booster was designed as an upgrade for a F250/F350, then you might need a F250/F350 vacuum pedal for best results in Dad's truck. In the photo I posted (from left to right) is a F150 vacuum pedal, F250 vacuum pedal, F450 hydroboost pedal. As far as the MC diameter, I think the larger diameter would not be a requisite for Dad's truck. If you have single piston front calipers and rear drum brakes that should be plenty of volume. The F450 are four wheel disc and the wheel cylinders are huge compared to the lighter duty trucks. A lot of guys have used the regular MC on the hydroboost booster with good results. Some gains were had by switching to the F450 MC but even the smaller MC was night and day compared to vacuum assist.
I might have some better info for you soon, as I am going to be putting a F450 HB system in my 1981. The brakes are non-viable as-is, and I happen to have an extra HB system in my parts stash.
Good catch! I didn't realize what you were saying/showing in the pic. So, Dad's truck should have a different pedal than BB. Gotcha. I will watch for that. But, I'll call Hydratech and talk this through with them as well.
And, good to know that the master should work. I think it will look good on Dad's truck.
Something I have noticed: I don't think your truck came from Ford with that upper chrome strip. That particular chrome strip was found on the 1980 - 1984 models. The 1985 and 1986 models used a tape stripe there instead.
As for the trim, it looks like there were two types of trim used. That without a vinyl insert was used from 1980-84, as you thought. But that with the vinyl insert, like both Dad's truck and Big Blue have, was used from 1980-85.
I also have the build sheet, along with lots of other documentation on the truck. Now, if I just knew how to decode it I might be able to prove it had that trim. Any tips?
Yes, y'all have my number. 
