ha ha ha ,if you watch that video closely, on turn nine you can actually see him run over a white door which gets stuck on the boot lid.so i was right after-all!!!
do you have any other recordings of the engine,
i was trying to listen but all i could hear was somebody in the background using a chainsaw!
that race track must be near a forest or timber yard.

BAHAHAHA i cracked up when i read that!!
they do sound like bloody Hondas in that first clip i must admit.

the 2nd KPGC10 video has a better note to it.

S20, good luck finding one! And they looked factory! Thats right, factory sidedrought Solex's and wanky headers!