I have 2 lowering spacers for sale. Machined by my own fair hand from 303 S/Steel.
One is 30 in length which lowers the rear end by approx 25mm.
The other is 22mm in length that lowers the rear end by approx 13 mm.
Cost £30 for each one. This includes p&p to UK only. If someone further afield wants them, message me and we can hopefully reach some sort of agreement.