The RPM is a 4bbl intake. The stock iron should be a 2bbl intake. You will need a carb too?
A '69 350HO used a Q-jet intake, same as was used on '69 400's & 428's.
Yes, but no idea what the OP has. Probably a standard 350, which is likely why someone stuck the Performer RPM on it.
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