[69a]

This is the 100% style filter he is asking about.There is NO unfiltered oil going to the motor. Some filters have an internal pressure relief that bypasses the oil internally if the filter is blocked. You need this feature! I use a Z9 or equivalent, it has a pressure relief that opens when the pressure between the input and output differs by more than around 10psi (this will have no effect on the pressure going to the engine) It also has an anti-drain back valve which is good on a remote mounted filter. Fit your oil pressure gauge after the filter.
I have bought Two of these. One from Motor City and the last one from Goller's Hot Rods. gollershotrods.com