I recently purchased the Champion aluminum radiator with the flat shroud and 2 electric fans for my 69 GTO. The radiator fits in the lower supports, and I have it temporarily wired to the upper core support while I consider an upper and lower support that supplants the stock ABS fan shroud that held the stock radiator in place. So far I haven't been successful in adapting any system. Has anyone else experienced this? I could have used the large fan shroud, but it seems defeating and just looks bulky. I am about to design my own solution.