i got a few questions before i order but your site has no phone number,i just want the tuner for my 2000 vette,do i need pro or standard and if i ever sell the car for a c6 vette can i use it on that vehicle or do i need to purchase something else,is paypal the only way to purchase?i'm a bit comfused with the credits and license thing,sorry if i posted in the wrong section.