Sorry Don, but little frenchie has got troubles again... (CR 1991)

[panzer]

Hi Don,
I've got a problem of friction with my right rear wing :
If you remember, I've post you a mail last months ago, because I was asking myself about the good size for my tires :
I told you that my rims (from Vintage Wheels) have a 4'' backspacing, and you finally advise me to put 275x60x15 tires, which was a good size for you.
Well, I've just put yesterday the wheels, and each time I pass on a bump or hole in the road, the right tire rubs the body (and only the right one), and a lot !!
So, I'm asking myself what is the solution :
- Should I change my shock absorbers, for firms ones ? If yes, could you give me a reference (which size, which mark, ... ?), so that I can buy this at a distributor like SUMMIT... ?
- Should I change the back coil springs, and if yes, same questions as for the shocks, and what is the donor vehicle, FORD ? because I've no ieda about this...
The only thing I know is that my 1991 Cobra CR was built in the "old factory".
Thanks for your help, and have a nice day, bye !!!