I had one of them Stu, back in 1988. It was a 518i reg E48 LRV. Easily the worst cat I ever owned.
Beautifully built, but with only 105bhp and 3 series brakes, it was hopeless. And terribly unreliable. I took it to LM in 1989 to see the silver arrows win. Can you still get 205/15 Michelin TRXs?