I recently purchased a 47 willys jeep and have discovered a few missing items. I have no air filter canister and am missing the oil filter and its pluming. I am not sure if this model just didn't come with an oil filter or it has all been removed. I would like to try and get the engine started but am concerned with the missing oil filter. Is this a problem to not have the oil filter? If so are there any good diagrams or sites to look at so I can plumb a new unit in?