Nice tip about Brewers, I'll have to remember that.
I don't run a computer but, the RPM heads should be well preped, use the rpm intake, 1-3/4 headers would be my choice size into a 2-1/2 exhaust, cam size of
[email protected] with as much lift as possible. Use the KB slugs. Use a 750 carb.
This should easily crest 400HP.