Ebay for the shells mate, a XXCr reproduction is available from Team Blue Groove in Canada and there is a another one listing the original shape shells too, I bought one of each recently for my XX.
Parrott:
Good luck running your car, they are still very capable cars and great to drive still. Ran mine tonight at Silverstone, ran with a 12x2 motor and it was great. Despite the now worn tyres it is still generating tons of grip (too much actually as i had some grip roll issues). There something very satisfying about finishing well in a high final with a 20 year old car
