Richard, I went with the 331 stroker from Scat. Heads I ordered have 202 valves, should clear my pistons according to Scat and Summit. Here is a little info from Edelbrock on these heads:

http://www.edelbrock.com/automotive_...e-street.shtml

All in all it should be a pretty crisp engine and the 4.30 gears should let the X303 cam get into it's operating range. I'm pretty anxious to see how the old girl pulls when I get it running.

Don