Just had my rear ACE pipes changed by my local indie. Used, guess what, Britpart! My mechanic reckons they were probably the easiest he has changed in terms of the bends being the right shape for easy fitting. UP yours Britpart bashers!
I had a similar problem when taking a mini island spiritedly in the wet. The nearside rear sort of 'banged' and briefly locked up causing the rear of the car to slew sideways. Presume it was something to do with the T/C.
The only problem that I can see wit 'Brian 47' siting of his extinguisher is if you have a rear end smash and you cant open the door it becomes very difficult to access.
After a series of problems finally bought a new compressor (£175.00) from Aerosus in Germany. Never had the slightest inclination to go the spring route.