It's a 427 with Edelbrock RPM airgap intake, hydraulic roller cam custom ground (mild), steel crank, icon pistons, Edelbrock aluminum heads, Crane gold roller rockers. My builder mainly builds dirt track race motors now but he's been machining for 35 yrs. He's very meticulous and thourough. He says that based on his experience, the motor should do about 450 hp and 450 tq. Close to 10-1 compression. Fortunately, he has been backed up for about 6 months so I have been able to "rat hole" the $. If I had to spend all this at once, I would probably kill over! Oh well, cheaper than pmts and the truck should run like a champ. I'll publish more details after I pick it up.