I have the old fashion AC (ie. window vents), so I'm planning on using the dead space about the headlight and wiper switches like kilich did https://www.ford-trucks.com/forums/9...l#post12119361. Now, I just need to figure out which one to buy.

 

Here's a pic of mine.

 

Same place I've used for a Sun Tach since my first in 1970 on what ever it was, be it car or truck. Not in my way unless I choose to look at it, no obstructing anything.




Sometimes it was on the left, but some got it on the right.



But always, if not OEM, if added, it got clamped.

 

This Equuos tach fit the non-existent AC vent area perfectly.

 

I used to race a '56 Ford with auto in stock classes back in the late 60s. I would start out in Low using my tach to hit Drive at 5500. Then, when the 1-2 shift was complete I would pull the lever back to Lo which kept it in 2nd till 5600 when I would put it back into Drive which was by then, 3rd. Lastly, I would use a manual lever that had disabled the kick-down linkage go back to the fully deployed position which, theory at the time had it, redirected more line pressure to keeping 3rd fully engaged. I would pull through the traps at 5800.
I was just a college student back then so didn't have the money to become truly competitive but I did give some high dollar fellas a pretty hard row to hoe. Handicap starts allowed me to compete with the likes of a 426 Hemi that passed me only in the last few feet. Those were heady days.