[dsraven]

I have mentioned before that an original crossmember could be sectioned out and dropped making it a bolt in. maybe something like that interestes you? brace the frame, cut out the center of the crossmember, fab up a new aesthetically peasing replacement part, weld flanges on the tips of the parts where they would meet up and bolt it together, then you can remove the bracing since it was just there to ensure the frame didn't spring out of shape when you cut the cross member, it should all fit back to a stock width then.