Oil filter cooler gasket?!?

Hey guys so recently I have gotten a really bad oil leak. I bought this car in august and recently found out it has some aftermarket oil cooler kit. There isn't any branding on any of the parts. I found the leak finally after replacing the oil filter housing gasket. The leak is coming from in between the oil filter sandwich plate and the oil filter housing unit. I have no idea how to get a gasket for this part and need any advise I can get from yall!

Just get a new adapter/sandwich thingy. It ought to come with new gaskets/O-rings.

Could you take a picture of what you're looking at? Is it this?

http://iihs.net/fsm/?d=165&f=Oil Filter Adapter.pdf