Currently the compression is at 11.8:1. If I ran the fast system wouldn't I have to do the dual quad setup? If I remember right the single 4 is good for like 600 hp.

I have several cranks ranging from 3.23-3.31 with 2.100 rod journals. They were from the early days when Petty was using the old R5 stuff. Compared to the newest R5 stuff, this stuff is heavy My plan is to use one of the large journal cranks for the turbo build.