The primary results after the 2019 event declared Alex Ames in a
1974 
Chevron B8 the winner and that formed the basis of the press releases. Later and still in the provisional period someone worked out (I assume) that this car was using the V5 of a BMW 2002 and was not registered and it got excluded. Sadly history had moved on but in reality the Diffey Escort was the real winner.
Forced induction makes a big difference to the Pom formula and there have been periods when because it is too much like hard work for the VSCC they did not really bother to include that aspect in the computations so a 944 turbo was just run as N/A on capacity alone.
The provisional 1 and 2 this year would not be my first choice of steed to try and win it outright and of course the weather played a factor but someone for the sake of accuracy should ask the question.