Hot Rod has an article that covers the issue of too much oil pressure, except it being a chevy engine. The owner was breaking distributor gears from too much pressure from the oil pump and a very aggressive cam. The mechanic changed out the cam, lifters and I think the rockers, I have an old brain that works really good for an hour or less. The owner had a miss match of parts to compensate for problems of parts breaking, I would look at your setup and see if you are going to cause some problems with too much oil pressure.