Scat SCA-1-90455 SBC 350 383 kit, balanced. Steel crank 3.750 stroke, 2 piece seal, KB718 forged flat top pistons 0.030 over, 4340 forged I-Beam rods, ARP 3/8" cap screws, floating pins, spiral retaining rings, Clevite bearings, Total Seal rings. Never been run. Internally balanced. Parts documentation and Bob weight card included. Was installed in a project engine but the project was scrapped and never completed. Engine was never fired.