One piston exploded ran great before that , has big intake is complete other than carb ,also have a magnafluxed and bored out 40 over f block ready for a build( 800 in machine work) ,doner block has good lower end -rotation assimbly , one piston blow up at low speen, before getting out of no wake zone. 800 for builder block and 800 for the moter w/1 blown piston , 1500 gets both f blocks