On a 57 vette or car, dual quad set up, what was on the original and what fits now---- looks like an edelbrock 500 cfm set up ain't right. BILL RINALDI
Rochesters have the wrong fuel inlet for the rear carb..These original Carters can be had but pricey.I'd check on the trifive boards.
Rebuildable core for 57 car runs aprox 100 bucks, 57 vette carb at least 250.00. Funny thing is the only difference is casting numbers. Thats is for the rear carbs, front carbs are through the roof. 1k or more for restored front carbs.