Here's food for thought. My brother-in-law is an excellent welder/fabricator. He builds custom VW parts and all sorts of things. (we raced offroad buggies for years) His latest work was on a 911 Porshe building oil tanks for a dry sump system. He has all the welders needed to weld on any material. (Mig, Tig, Stick, Gas Torch etc.) He may be willing to fab the subframes if he gets a straight one as a template to make a jig. I could use my frame because to my knowledge it's never been bent. I'll try to get pictures of his work if anyone is interested.
