Jeff, I weighed my 69 fastback on a set of government highway scales last summer and it weighed exactly 3070 lbs with 1/3 of a tank of fuel and no driver. It's a full bodied, 351W 4speed car, with big-n-little Cragar SS's, skinny's on the front, 30x11.5 Goodyears on the back, a 9" rear, headers but no exhaust system. It's a fairly plain fastback with not much for options. I doubt if a totally stock car with the same drivetrain, manifold, stock wheels and tires and a full exhaust would weigh any more than 3250 lbs wet.
A buddy who was racing a stock bodied 69 fastback weighed his, it had a 'glass hood, and all the seats wereout of it, and it weighed 2870#. It's street legal so its not stripped, (except for the other seats)