Pistons are from early 70's Honda motorcycles. Emblem is from a 1963 Corvette. Side cover is also from early 70's Honda motorcycle. Pistons are welded to a timing gear and shaft, which is bolted through cut-down camshaft welded to stub axle shaft and pulleys. Lamp harp mounted to steel plate, bolted to 1/2 of large rod end welded to camshaft.