I am currently in process of buying a 1990 Ford F250 4x4 Diesel Pickup. Once the truck is paid for and I take possesion of it, I plan on making a small winch truck out of it. I plan on building a flatbed with a rolling tailboard and gin poles. The truck as it sets has the stock 8' box on it. How long could i extend the new bed without altering the frame, and how tall can i make my gin poles?
Also the truck is an automatic transmission so i can't put a PTO winch on it like i would like to. If i go with an electric winch, what would be a good selection? Any help and advice would be appreciated.

Bryce