I bought it already built it has rpm alum heads ported,76mm maf,70mm tb,gt-40 tubed intake,30lb injectors,190lph feul pump,3:73 gear,fp regulator,comp cam 544 lift ,trw forged pistons,fluidyne radiator and 150 shot nos I can't even do a burnout its losing power bad ive heard it could be the o2 sensors or maf or temp sensor it won't beat a stock car it used to jump sideways in 3rd now its just weak idk I forgot the car has MAC shorty headers a off road h-pipe with prochamber and MAC flowpath mufflers has msd distributor and streetfire coil and Taylor 10mm wires,tko 500 trans, king cobra clutch,I'm probably leaving something out but its mildly built but it isn't running right at all it sounds like a beast I've spent a lot of money making it saleen clone