They ran a F1 car of the time against Will Gollops 6r4 in Fast car in the 80s, I vaguely remember the F1 car went onto something like 170mph in 17s and the 6R4 kept up with it to around it's own top speed. I should still have the mag in the loft somewhere. I'll have to dig it out one day (if they don't fall through the ceiling first )
Obviously that was fast for those days, but not that special now. In fact quite a few road cars could probably match it.