Well, I see we're all geezers here. Czechman hit the nail on the head. Bought my '59 sight unseen, figured I'd have to rebuild the engine. Wrong. 180-184 psi per cyl, quadraject carb,HEI, different manifold intake, and quad-pipe dual exhaust headers, hydrolic lifters, the whole nine yards. Bet it doesn't even have 1,000 miles on it. I'm leaving it as is, except replacing the four pipe headers with the original ramshorn exhaust header (but keeping the dual exhaust because my shopmate keeps harassing me about balancing the "breath in/breath out" needs of the engine. He's kind of a screwball, but often right. Thanks for the responses - tremendously interesting. Gregg.