as far as i can remember, a chipped up scooby. the fastest (accellerating)car i have owned was my chevette hs (twin 48 dellortos,blydenstien ex.manifold etc) it was 1979, i was young free single with a nice motor,a few bob and hair! happy days. 
Saw a HS Chevette in Blackpool (white with black windows) in the dry just keep gettin its arse out every time he put his foot down, and it sounded nice too 
Mates Scooby had been chipped dont know what to but it was fast 8-)
Sorry I posted this but got it mixed up with another,
In the old days, late 70’s early 80’s Driven most Russell Brookes (Andrews Heat For Hire) Rally Cars, Mk 1 and 2 Escort, Sunbeam, Chevette and Manta. These were all spare / duplicate cars fully loaded and a hoot to drive. Company Policy, at the time (Andrews) Was if you got caught speeding in one you got the sack!
For a couple of years used to follow the RAC Rally in an Andrews Transit, no parking problems you could get anywhere. By coincidence we were overtaken by Russell Brookes at Kielder one night and simply followed him down to the beginning of the stage, marshals assumed I was the support vehicle, I did not argue.
Always wanted one of the support vehicles, as a company van, I tried, but got one of the 1st Mk2 Transits instead, in the early days when Andrews did all the support themselves they ran V6 Transits.