I have a couple of B-Fast diffs in stock for the Mad Rat at the moment, looking to retail them at £35 including postage for a complete diff including diff and thrust grease,
A complete diff comes with diff plates, shims, carbide diff balls, thrust plates and thrust balls and instructions,
for more information click below
http://www.bfastrc.com/tqracing.html
please send PM, not posted up on website yet.