Which Carb Gives a Balance of Power & MPG?

If you go for the Offenhauser, you need to be careful. There'sone Summit has marked "spread bore" that's a square bore intake. Here is the Spread bore. http://www.autopartsdealer.com/offe...highrise_intake_manifolds_5765-p224971-p.html

That's about as cheap as I've been able to find it. i also am not crazy about the fact that there doesnt seem to be any pics of it available. kinda spooky.

oops...I found it cheaper. http://www.aaamarine.com/servlet/the-795/5765-Offenhauser-tall-single/Detail

Or how bout this.... http://www.summitracing.com/parts/OFY-5750/ A DUAL SPREAD BORE for the low deck motor. LAWD HAVE MERCY could you imagine hearin TWO thermoquads openin up? Good grief!