I'm with Ed on this one...the difficulty of installation is really the deciding factor in the cam vs. rockers debate. If the car is setup properly gas mileage shouldn't change all that much. FWIW...I'm cammed, have 3.69 gears, a 3000 stall converter, am running on 245/50R16 tires that are about 1" shorter than stock, and I still pull down 15-16mpg city and 25-26 highway while cruising at 80mph...or at least I was till that watered down 10% ethanol crap made it'* way down here.

I'd be taking the car to the Intense garage when it comes down to installing the cam. Not something I feel capable of doing correctly.