why not get a sheet of metal and fabricate ur own panels then u can make to whatever shape and size u want
If you can bear the pain, take out the rear panel. They'll usually rot out underneath that, and the main support for the rear seat belt box is there.
Try and get a MIG which will go to 25 amps or less (or a TIG) or you'll probably have to use gas -- the metal, for the most part, is very thin.
That car is due for an MR2 turbo in the back, so most of the wheelarches will have to be fabricated to suit, anyway.
You can't do it in aluminium because it's a structural (and prescribed) area -- at least, if you have rear seat belts.
Not much progress over the last few days, still can't find any replacement inner arches yet. I have found the plastic ones from Poland, has anyone fitted these? Would they need my current metal ones removing of are they purely for protection?
I could probably plate up my old ones and put plastic covers over as more protection, why didn't they fit plastic inners to uk cinqs anyway?
Thanks
Nath
Poland has harsh winters and uses plenty are road salt/grit (unlike the UK ). Plastic rear arch liners are worth fitting if available.