By some what budget, I mean no 2000-3000 dollar block. molnar crank and rods ect. sure the heads will cost a bunch, but that's where most of the power is at. Heck, I built my 511 on some what of a budget at about 8000-$8500. Ya just have to shop around. What would a 650-700hp pump gas crate 511 cost? $15000 or more?