[PrerunnerRob]

I started my crewcab this exact same way several years ago. Ended up scrapping it due to not having the time or extensive sheet metal skills required to make it look right. There are MANY issues that you wont realize until you are midway through. Hers a few I had to deal with:
Rear doors-my original truck was a '63, and so was the donor cab. I didn't want a filler piece between the two doors, which meant the rear doors would have to swing suicide, due to the vent window being in front of the hinge line. This didn't even begin to include the inner workings of the door, or having to re-angle the leading ede of the rear door, or the trailing edge of the front door. The doors also angle in at the top towards the front of the cab, again requiring major re-working.
Inner roof-It has multiple contours and changes width from front to back, along with being a stamped piece of steel. There's a reason that suburbans use a conventional headliner, and it would take several truck roof sections to try to make it look correct.
Outer roof-the roof raises from front to rear, and blending the roof sections together would be difficult without a sheet metal shop at your disposal. Also the front narrows on the last foot or so, and would require several outer roof sections to stretch the length.
Under cab-there are some support rails that run at a diagonal angle, and would need to be replaced or fabricated to support the floor. Again, another cab would be needed to provide a filler section.
I'm not trying to deter you from taking this on, but when I started mine, I had no idea how many complicated issues I would run into. If you have any questions, I'll help as best I can.
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