[Model A Ron]

I have the full flow valve cover filter from Mike's and it works well. Your oil will stay clean and this will be noticeable. I use Shell Rotella T6 15w40 and it will get changed at 2500 or once a year. You need to look for filters that have a valve that opens at I think 8 to 12 psi however you can also take a drill to the round holed that go along the center of the filter. This effectively removes the valve and removes the resistance with it.

Ron