Ok, so to build the wood bed you need a circular saw, a drill, and a wrench. To build the metal bed you need a tubing notcher or a chop saw, a welder, a tubing bender, most likely a torch or a plasma cutter, and a couple of days. The wood bed has it merits. Build both and compare your wallet. Roll either of them and you're gonna screw up the cab bad enough that you won't care what shape the bed is in. Maybe you should flame him for not doing a full exo. 

Okay lets finish up this "Wood vs Steel Debate": Take this:

never thought that that would happen. my experience with the wood was this IT F'IN ROCKED! i was slamming trees, pivoting around them, hit a few huge rocks and it didnt even faze it. i would definetly do it agian!