[O1Sparky]

I am building a 1980 3/4t truck into a serious towing rig. The existing cab is toast, so I picked up another cab (a 76 1/2t) and had it repaired. I am to the point of ordering the cab to frame hardware, I discovered that theres 2 separate kits, 1 for the 1/2t and 1 for the 3/4t, are there any modifications that have to be made for this installation? Or are they a close enough match to fit together?