I have a 4.04 x 3.58=367 and with Eddies and a 230* cam, and it's a streeter's dream at 10.9Scr with the KB 107s....... I couldn't wish for more. I'm actually thinking a lil less would be ok, to get back a lil fuel mileage. I'm thinking of a tighter LSA is all, and shedding a lil exhaust duration.