66 valiant with newer slant six

Yes, if you go to a 2 or 4 barrel carb you have to do a different throttle and linkage. The bolt-in is to find an early A V8 and get the parts from that. Otherwise a later pedal will work but you have to drill mounting holes.
Oh ok maybe that’s what I was seeing. Kind of on the fence on what to do. Between doing a 225 with a bigger carb or just rebuild the 170. It’s the original motor so didn’t want to slug a rod through it and maybe replace with a 225 for fun. The trans I have isn’t going to hit up to too much power. Thanks for all the help man.