Still working on installing the engine into the bike before figuring out where an oil cooler would go. But I mocked up a 40$ cooler I found on amazon. It'll need to be cut down for sure as its 12" long, but I've welded radiator cores before so this shouldn't be too hard. I also may look into anodizing it black, Never been a fan of paint, especially on parts made for exchanging heat, but we'll see.