[USMC302]

Sounds like you made a good choice, I favor the Trickflow components as well. Trickflow also has a camshaft that will work well with those heads. Unfortunately I disagree with the 400hp at the flywheel estimate, it may be a little lower than that. I was running right around 400 with my 331, with my h/i/c combo on stock compression. If you plan on running a lot more compression, I think you will be closer, either way sounds like you've had plenty of power under your seat before and will enjoy this one as well. Good luck trying to control the urge...haven't met many that could.