I was running the 9333's with a .020 copper shim. It was cool at 10-12 lbs and 20 degrees timing, but the weather turn cold, I gained a few lbs of boost, and I got a bit greedy on the timing. To be honest, I really need a set of heads with more cc volume, but mine are worked pretty good, and I dont have the cash to sink into another set. I've been researching alky injection, so when I swap HGs, I,m going to add a setup to keep the octane level up, and the charge temps down.
Regarding the trans situation, I got Cooks racing to build me "race" C4, and it turned out GREAT! With the PTC converter, my shift lite barely blinks on the 1-2 or the 2-3 shift. So,. I just gotta get motivated to swap HGs, and I,m set, until my stock botton end takes a dump......