I'd like to get some feedback from those who did this. Looks like the gain from say AFR 165's over GT-40 irons is about 35hp. How is tuning, driveability, etc... I'd like to know if you felt this was worth the money. Thanks.
since you already have GT40 heads you might want to look into thumpers work for gt40's. The ported GT40's should be in the area of AFR 165. Plus since you already have the heads the cost would be alot less. I sent him my gt40 heads off a 95 cobra for work and they look awsome, if you want some pics I have a few realy good ones. I am still waiting to get some dyno numbers as stupid carp keeps going on .