I'm transplanting a Kohler Magnum into a tractor which origionally had no oil filter and the only one that will fit inside the frame rails is the Napa 7035 Its equivelant to the 28-052-01 Kohler filter. Are these any good? From the pics on napas site its so small it looks like it would have no media lol. Am I better off getting the Kohler filter or the Napa. The napa's case colors look differant from the normal size Kohler fitlers and larger. Just wondering if these are just knock offs or something.