I've got a 71' Ironhead and I'm making my oil tank but I don't think it's gonna be enough fluid. I'm an idiot but that's a separate issue. So I was thinking of buying or making an oil cooler to help add more oil and keep it running a little cooler and wondered what other guys made or bought. I thought about just capping part of my frame tubes and welding fittings in, but I'd rather have something a little cooler (pun intended) than that. Ideas? Suggestions? Thanks for any comments guys!