They aren't kidding about the 3.73's with the #10200704 though. I run 3.55's with 26" tires and you can definitely tell when you take off. Engine is a 1968 340, .060" over, KB 243 hyper pistons, Lunati 10200704 cam, static compression ~9.8:1. Doug's headers, Summit 2.5" dual exhaust with Dynomax welded Ultra-flo's. Heads are 308's, ported and flowing 264 cfm @ .500". It idles down decently, but it only pulls about 9" of vacuum at idle. Probably a little hotter than what I should have done for a car that I use as my daily driver, but it works! :D
