[duke]

The most common rack used is a Mustang II. I swithced to a late model fox rack that is available with a quick ratio. Fits but you need to buy the offset rack bushings. The Fox is 1/2" closer on mounts.

For brakes you can buy an adapter from Heidts that fits the B&B spindle and allows you to bolt on aftermarket Willwood Calipers which are much better than the GM.
Details in my gallery.