Professionally built by Cogswell Motorsports in Chula Vista, CA - All the good stuff, Ohio Crankshaft 496 BBC stroker rotating assembly, 4 bolt main, O-ringed Heads, Ported and Polished Victor CNC heads (flowed 300+ cfm) all Crower Valvetrain, all ARP hardware, 13:1 compression ratio, M3SC procharger with air to water intercooler, rons fuel injection 2100 cfm terminator with blower nozzle jets, #1 billet pump, primer, and surge tank. Comes with spare 0 1/2 black pump, NA nozzle jets, blower and NA pills, etc. Accel billet distributor, CSR water pump and flexplate. Engine built new in July 2016 has 20 partial 1/8th mile passes. Last pass July 2017; sold car. 1200+ HP on a 9 PSI tune.