My company offers a drop service for your truck axle. Three inches for $459.00 and you will have to modify the drag link steering arm, heat and bend it down to re-align the drag link so you minimize bump steer.
CPP also sells a tubular dropped axle for the same price as having your stock one reworked. I am not a huge fan of the CPP one since it is hollow. I want to know I can hit a deep pot hole and not buckle the thing.
if you wanna see my truck its in the gallery under hot rod pick up. when i say horror stories i mean i have just heard a lot of things going wrong with ifs systems like bad ride problems shock mounts braking things like that and all the parts came from Vintage Ford in Sacramento California
Unless CCP found another dealer for them, they don't have the aftermarket axles. They were being produced by CenPen/Worm Inc. Which I hear is out of business.
Scrub line issue, scrub line is measured from the ground on one wheel to the wheel lip as if there were no tire, side to side and front to back. For the most part a 3" drop will clear but there may be instances where the axle hangs down below. It is up to YOU to determine the safety of your own vehicle. We can drop 3" or less as you desire.
I will say this about IFS set ups. You only hear about the bad ones. And like the dropped axle, it is only going to be as good as the installer. Unfortunately there are people out there that "know better" than the designers of the kit they purchased and take liberties with the design or application. This is generally what causes failures unless it is a poor design like the currently available strut-less tubular control arms for Mustang II suspensions that are only mounted in single shear situations. I have a growing list of crappy installs I can show you to prove it.
Systems like my Dodge Dakota based kit have enjoyed thousands of miles. My personal truck, 63 Unibody with a twin turbo BBC has seen over fifty thousand miles without a hitch. I have customers with many time over that kind of mileage on the clock without so much as changing shocks. I know subframed cars and trucks that get driven like taxicabs and a friend of mine has a 48 Plymouth with over 120K on a STOCK crossmembered Mustang II installation I did almost 20 years ago and has only had to replace the ball joints and shocks.
And if you think for a minute we baby our stuff, you would be mistaken.
Hmmm They now carry 65-74 3" dropped beams. I wonder when they started carrying those. Anyhow, the 57-60 beams are still available. I just talked to the service rep and he said those fit the 61-64 trucks as well. But like I posted earlier I am not too confident in their abilites since the tub is hollow. I know that there are tubular chassis out there that are withstanding some serious torsional forces, 1000 hp + engines. I have more faith in them then these is all.