[dscott]

Chuck, I use the Carrera coilovers on the front. With the big block you should use a 500# spring. Since the upper mount is different from the Mustang II the shocks need to be a little longer. As Jack mentioned some of the upper arms will not stay tight. This is usually a problem with the cross bar. Some of them have knurling to hold them in place and some don't. I've never had a problem with the knurled ones. If the cross bar is aluminum they will need the kit that Jack mentioned. You can give me a call and I can tell you how much the coilovers will cost.
Don 1-888-722-6272