Carb Question

My son has a 76 duster with a 225, the guy we got it from pulled most of the emission stuff off of it and it runs like crap now. it had a pieced together 1945 holley on it that we replaced with another 1945 but we keep getting junk remans. My question is would a 1920 off a earlier model bolt on without having to change the throttle linkage. I'm just trying to make this a none emission old style engine. this is his daily driver and he doesn't have much money starting a family and all. any help would be great.
Thanks Dave
Author: Dave Baker