Engine block : b18b1 CSS 81.5mm Wesco 81.5mm pistons wrist pins upgraded Eagle rods ARP rod bolts Billet girdle ARP main cap bolts kings bearings rods/ mains Oem std size crankshaft balanced and cleaned Oem Honda oil pump Gates timing belt/water pump kit P-72 GSR conversion oil pick up / oil pan set up short block is used and was removed from a running turbo civic. No mechanical issues.