Dave-
Don't be fooled by all that glitters. My Offenhauser 3x1 Intake, Carb adapters and 3- Holley/Weber carbs(rebuilt)with linkage and air cleaners cost just under $300.00 from Stovebolt Engine Co. Not too bad for lots of air and fuel passing through your right foot!
It also gets the most attention when the hood is opened.
If you are considering Air conditioning, call Tom Langdon @ Stovebolt. He'll set you up with what you need. He's very helpful and knowledgeable about all things GM inline.
Hey anytime you get 20mpg+ is smokin'!
RapRap
1940 Chevy Coupe