I have two Rimmer supercharger packages for sale which I recently posted on Ebay. One is for the later single serpentine belt engine and the other came off of a 1994 Defender 90 with two belts. I have them priced at $1750 each, and will end the auction if a forum member would like to purchase them at this price. Otherwise, the starting price is $1250 with no reserve.
These were pulled off of Defender 90s during engine swaps, and I purchased them with plans on installing them onto Rovers that I never ended up purchasing so I have no experience with running these blowers.
The Ebay listings are: