On my Caprice, I used a Napa FIL-6440, which is a paper cartridge/canister filter. The thing is big, at 11" long. However, my Camaro is not endowed with as much room and this filter just will not fit. I need something that's no longer than 9". I see a ton of aftermarket oiled cotton gauze filters but before I go that route, I wondered if anyone was aware of a NON-oiled aftermarket cone-type filter? I need a 3.5" ID (for 3" PVC) though I can also do a 4" ID. Any help?