I have a 99 cobra with a vortech on it. i took it to a tuner the other day and he told me that he could get 450 out of the rear wheels. everything is stock on the car except for the vortech and 38# injectors. first of all do you think the tuner can safely actually get 450 out of the rear wheels. and second of all i just order some nitto drag radials 275/40-17. is my stock rearend goind to be able to take the 450 at the rear wheels.