My 71 340 started leaking oil at the 90* adapter where it mates to the block. It's a pretty good leak. I used a gasket from my stash but not sure if it was the right type, the diam. was correct. Last guy just used silicone. Any insight to how these mount and what gaskets go where? A good pic would be great. I would do away with it but the car has headers and I think the filter will hit them sticking straight out. Thanks! Tim