great info...I'm bummed by the stock exhaust flow, and even ported, the exhaust flow doesn't look that much better than an older head (no fault of yours, of course)

one more question: what are the port volumes? how do they compare with the port volumes of an older 360 head (J/596/et al), eddies, and 302's? pre and post porting?

if the port volume is close to the 302's you did, geez, box stock these would rock on a 318.