The 2003 engine has the oil pipe on the inlet manifold, earlier engines had the pipe onto the carb. The oil pump was a different design on earlier engines that requires a different throttle cable.
Sorry but I dont know what year these changes came in.
My dads mate (who stripped down the engine) said that the oil pump was glued into the engine so im guessing the oil pump will be the same. Cheers for the help mate :)
