It is going to be a LOT lighter than when it had 469bhp and 500ftlb and it was hard to take in the acceleration then on the close ratio box, I think I need to try it around 520 first as it should all come in VERY quickly and more torque, I cannot imagine what 600 / 630bhp would be like in 1000kg car, let alone the 710 that the engine has already done on the dyno.

Have you seen an old Rally Cross full bore launch where they crab up the race track with all 4 wheels spinning.....