ok you can put a giant wing on your car for you know more down force thats 100hp
then put some ground effects on your car But do not paint them the same color as the rest of the car it adds 50 hp
a few stickers on the window and bumper will add about 35 hp
on the inside you have to have a switch to engage Your V-TAC thats about 50hp
and you absolutely have to add a big hood and roof scoop

it adds 100hp
do not forget some big subwoofers
lets add all the hp so a 426+100+50+35+50+100= so now you have a whoping 761hp camaro