I just picked up an '80 Chev 3+3 C30 (though that's going to change very, very soon). A guy in town has a real real nice 80's K30, single cab, with a 14' or so bed behind it, dovetail'ed with ramps...could probably haul a descent SWB pickup on that flatbed. I'd love to buy the truck, and throw the flatbed behind my sixpack cab, but, well, he wants a whopping EIGHT GRAND for the truck...with 120k! So I'm thinking about building one like it myself. I still have a bunch of steel left over from building a flatbed car trailer (5 sticks of 2x4" rect. tubing, 1/4" wall). I'm curious, if I were to go out of MN to pick up a car - for sake of argument, say any state in the midwest - how long of a flatbed can I put behind this thing, and still be legal? Thanks!