A 425 would be fine.... it actually flows 460-500 cfm naturally aspirated. I used the CA100 on recommendation from an expert. also I didn't have to build a carb box. :-) Remember that turboed cars don't like a whole bunch of overlap in the cam. From what I've been told, a cam doesn't make as much difference on forced-induction car as it would N/A. Same with headwork. I am running the "stock" cam in my El Camino, but that was already an RV cam on account of it was a boat motor.
Tank size is 42.5 gallons effective size, I "liberated" that from a truck I already had.
As far as tuning goes, so far I just adjusted the idle, then set the power all the way rich, the started backing it down lean. I still have some work to do with the timing. It's a little slow of the bottom, I want to see if I can get some more go off the line.
