my engine cost a few grand more then predator heads cost themselves..340 resto block,4" scat crank,4.185 diamond pistons,11.3 compression,and knowledge from ryanj o yea cam is little under 700lift..its a street car also 3.91 gears and all so i paid extra for pac springs...i was gonna try methanol injection to make up for the lack of horsepower being it only made 729hp with a 950carb and only 620lbs of torque..i know yuck is in the bushes reading my combo..lol