http://cgi.ebay.com/ebaymotors/ws/e...r_id=183592784293&ua=WVI8&itemid=260047050700 Is that the spacer you have between your intake and carb? Also on that cam 292 could be the cam grind. You said the guy probivided info from the builder what does it all say?
I would have fixed the converter issue first since you probably need more stall anyways.