If you want one that looks similar but is an 800cfm model, you can buy an early 70's 455 Buick carb. Everyday Performance shows several of these Buick carbs.
800 CFM will be '72 and later for the Buick 455 carbs.
1968 400 Coupe, verdoro green, black vinyl top, auto 1969 GTO Judge coupe, Carousel Red, manual 1971 Trans Am, cameo white, auto 1970 Buick Skylark Custom Convertible 350-4(driver), Fire Red, white top, auto 1972 Buick GS Stage 1, Royal Blue, black vinyl top, auto
