Hi I used a gallon of engine de-greasing from partco a lot cheaper than halfords Ie 5lit for price of 1 lit at halfords. I cleansed rear with a wire brush and drill and repainted do not use hammer*bleep*e as it is crap ( I know I did )
If I did it again Kit FIT do a full reconditioned one for I think £300 with new brakes etc.
Have fun
Stephen Altwasser