The main aim of my project is to design and get made the "special" parts you need for a DIY Disc Brake Kit .
Phase 1 - the 13" wheel conversion has been sorted for some time and is the easiest and cheapest of all , the only "special" part needed is the disc brake adaptor plates that I had made.
Phase 2 - is the intermediate stage shown above (anyone spot the deliberate mistake in the top picture?) "Special" parts needed are the plates , slightly modified disc and a pair of small spacer rings. Slightly more compact than phase 1 but does not fit the 12" wheels no no real advantage.
Phase 3 - I hope will fit the 12" wheels but I will not know until I have put it all together. "Special" parts needed will be a more modified disc , new plate design and the spacer rings.
All the other parts required are standard Fiat [-/ If phase 3 does not work then I guess there might be a 4 and phase 5 might be looking at rear disc brakes