Porsche brakes- upgrade for other cars

I have a set of front and rear callipers, 4 pot front and matching 4 pot rears. These are off a 911 Turbo (996) and provide amazing stopping power. I've seen these fitted to Audi's, BMW's, VW's and other cars with suitable brackets so could make an excellent upgrade for someone.

£500 o.n.o for the lot