i would love to talk to u about ur twin turb w2 motor. i know im useing an f1 but those are some awsome #s u have. the heads im use are the batten w2. and im have a soild rollor.8.9-1 comp. i 4bolt main my block, 1/2 fill it. how do u kn how the f1 compare to th turbos u had or have