body bolts


2 Cyl short NO PROBLEM
hey guys I am getting ready to bolt my body back to the frame. well i went out to get new bolts and found out that on this car there are 12 body bolts and not all of them are the same thread from what i can make of it some of them are metric and some standard now most of my bolts snapped when taking apart and i only kept one good bolt . i was wondering if anyone knows what size bolts i need for the body length, size, and thread pitch and what are metric and what are standard...
My experience has been that they are ALL metric, and all the same length except the 2 underneath the doors. I got mine at the local Chevrolet dealer.