 uh, 10 to 1 piston, um, 292, 501 camshaft, the heads have two, uh, 214, 181 valves, bronze guide, they've been, uh, bolt ported, uh, 850 double pumper hound, uh, 850 double pumper hound, uh, 850 double pumper hound, uh, 850 double pumper hound, and, uh,