I need to find out what the codes are in the glove box for the gears in an '89 Iroc. There only two options for the 350 motor, 2.77's or 3.27's, but, I need to know where to find these code #'s so I can find out for sure. Trying to buy a car and if it has the 2.77's not going to do it. Need help quickly anyone tell me where to go to find these codes!?

 

Nm found it! Thanks though.