its a texas speed rotating assembly. 4 inch stroker crank h beam rods wiseco pistons that are 4.030. arp main studs head studs basically everything is arp inside and out. dual row timing chain with dampener and a high volume high pressure melling oil pump. i have a lunati cam ground for turbo application. i have texas speed tie bar lifters cometic head gaskets i think that may be it lol. i also have coated the frame it looks soooooo good.