Yes, you can get a kit from Milton (www.miltonrace.co.uk) that includes the brackets etc.

You will need to source your own 2wd Cosworth / XR4x4 Sierra / 2.0GLS Sierra Calipers, and probably better to source the disks over there, as well as the Sierra Handbrake cable.

The Milton Kit is by far the best available for the money as it fits under nearly all 13" wheels where as the other kits on the market either dont fit under 13's or you are very limited to wheels you can use