Need pics of stock '64 225 carb/kickdown linkage.

See post № 6 of this thread; it's not a "V-8 pedal unit". It was used with V8s, and also with Slant motors with factory air in '65-'66.

I'd estimate a great many people didn't realize it also came on 65/66 slants with factory integrated heat and AC. It's right there in the FSM, which I believe is one of the 3 books you highly recommend for newbies (and probably some old hands as well lol!)