... ,303400, 303700, 303900, 350700, 350400, 351400, 351700 and 400400-422400for L-Head Twin horizontal and V-Twin Vanguard enginesE-Z-GO ... , 303700, 303900, 350700, 350400, 351400, 351700 and 400400-422400;for L-Head Twin horizontal and V-Twin Vanguard engines;E-Z ...