1975 version of Buick 215 cid all aluminum engine bored to 260 cid. Tuned headers, log intake manifold, PS-5C carb. Accessory case on back of engine contained upper engine mounts, fuel pump, oil pump, dual positive displacement coolant pumps, alternator and vacuum pump. Dry sump oil resivor just below engine on firewall. Heavy black hose from valve covers are inverted oil return lines.