If he was a good uncle he would be cutting you some slack on one of those shovel nose Firebirds or the El Caminos. A towing package and T tops? By 79 they were using highway gears for better fuel economy. There are codes on the rear end to find out what gears are in it. Look for a aluminum tag on differential cover to see if it has a posi.
Last edited by V8&4spd; 11-24-2012 at 04:27 PM.