I know all about rusty puma's my grandsons was so rotten the doors would fall off if you opened them!! no metal left round the door hinges on the 'a' post, the rest was rotten as well. Took the good bits off before it got crushed
Then I had to make a choice sell the parts or use them again as the little bugger never paid me for the bits he gave them back. Struck lucky with this car as there is plenty of metal left, just starting to rust on one sill and rear wheel arch.
Another thing I bought for it last year was some new wheels, have now had them refurbished and powder coated black and are now fitted, with the 20mm axle spacers they fill the arches nicely.The original steering wheel has been replaced with a suede replacement