Don... Have you checked out Jim Meyer Racing? I am currently doing a 1941 GMC 1/2 ton and I'm using one of his I.F.S. kits. The kit uses 70-81 Camaro spindles, hubs, 11" rotors and brakes. These are a little more heavy duty then Mustang II stuff. I dont have it installed yet, but the "A" arms and cross member look very stout.I just got the frame ready to weld the cross member in last weekend, so it should be done soon. If you would like I can e-mail you some pictures of what you get. Check out his website at
www.jimmeyerracing.com or give them a call, they are supper nice to talk to and very informative. Good luck with your resto job!!