Dear Mr. Rapier. I think I may be running pretty close to that right now. At least I was before my timing moved on me. I bought a brand new CJ spec Cleveland. I already had an Edlebrock performer intake, which is probably ten or fiveteen bucks used on ebay, I used the stock (for my car) 650 cfm Holley double Pumper. 4777-4. I have always had Hall big bore headers and exaust on my car, for which I am truly greatfull to some previous wowner, and an Accel distributer. Oh and a K&N air filter. When I was first breaking in the engine I was getting just over 15 miles per gallon. I was babying it pretty much though so that may explain it. And I think the timing has gotten slightly retarded because the mechanic wouldn't listen to me and the timing chain may have streached just a little bit. So I think if I am not at 300 HP I am just off a skoosh. The rating from the factory was something like 235 or something, I can't remember now and they have changed the way they do that now, but I have a highly calibrated ass, and it tells me pretty darn close what Horsepower a car has. I would say I am right around 300 to maybe 330. I did have an almost 400 Hp engine though and it wasn't just my ass that said so. It was other peoples asses too.