I just bought a '92 Chevy C-3500 with a 9' stake that dumps. The plate is missing off the rack, but it has a Scott 6 ton hoist.
Power is electric/hydraulic. The gentleman I bought it from did an excellent job of homemade sides and barn doors. Rack has a steel bulkhead with a small window in it.
I have to agree with Geoff, the Gallions leave a lot to be desired, just don't hold up. One other note, my rack has a door in the floor which covers a frame mounted ball hitch for a gooseneck trailer.