The engine has 12 passes on it, got to expensive for me and became a huge pocket drain. I got crazy building such a monster for my car, 1st I had to change the ignition system (MSD), 2nd I had to change the fuel system (5/8" aluminum fuel line along the frame, biggest BG fuel pump, steel braided fuel lines and BG 825cfm carb and a pressure regulator), 3rd I had to buy huge drag slicks to handle the power which are gone already as well as the front tires. It has Ross 13 to 1 forged pistons, 6" Trick Flow connecting rods, steel crank good to 8,500 rpm, Dart Iron Eagle 2:05 heads with Manley valves, Dart single plane intake, Comp Cams biggest roller cam with matching roller rockers and roller lifters, Comp cams better, push tubes which cost more then the standard push tubes, Arp studs in the mains, heads, intake, valve covers and oil pan. All engine parts balanced, I have well over $10,000.00 in it. I am a retired MARINE and very honest, the engine hasn't ran in over 10 years because I started building my house and garage here on my ranch. For the last 2 years I haven't done anything because I had a motorcycle wreck and almost ripped my left foot off my leg.