sad news... I don't think dual discs is going to work this time around I went out and looked it over and at first glance it looked like I would be able to oversize the holes on the disc and just run the drive flange through it on one side and bolt it on for the non drive side. It was looking good until I checked out the clearances for the caliper. in order to clear the caliper I would need to space the disc out quite a ways. I'm going to look into some really big discs and see if they might make it workable. also see what other options there are for mechanical calipers and how narrow I can get them. Good thing I work at a bike shop! plenty of info available. the only limitation will be $$$