Mike (Dragsix), That is a good read, lots of good information. Personally, I decided to go with a Sprint Q-Jet on my 292. With the lumped head and gasket-matched and mildly ported exhaust ports, it should be more efficient. Not trying to hijack this thread, but I wanted to chime in with a thank you and that I agree the 1bbl is good but not great. Those 1bbl's are workhorses, though.