Well, I finally figured out what I needed to know as far as the previous post on 235 differences. I only have one unresolved question. If I want to continue to use the outside oil line from the inlet connection in the main oil gallery to the head on the other side of the engine AND install an oil filter as well, can this be done? To make it work without drilling new holes, I would need to run a connect that will allow me to connect (1) to the oil line mentioned above, (2) the inlet on the oil filter and (3) the oil pressure gauge. Most connects I've seen would allow for 2, but not 3. I can probably find something that will work, but I want to make sure this won't affect the oil pressure.