Im ashamed to say it but i think it ruin my cobra, i dont like the whole odometer and tach reading differently afterwards thing. It ruins the fact that the car has original miles in the first place. It goes in the shop wednesday and i feel like calling GTR back and cancelling the swap for the 3:90s. somebody please tell me its going to be all right and that will not ruin the value of my beautiful car

and you should prob. call and cancel that order anyways. dont waste your money on 3.90s. go AT LEAST 4.10s, but you really should go w/ 4.30s.