Give Wild Bill a call I bet he'll build you one if you ask nicely...
http://www.highliftjack.com/
I've talked to people to try to get a deck made, if they're not buying large quantity of the material, it costs a TON to build a decent deck.
Also, the newer decks are a lot more technical now, sliding sides, telescoping ramps... it's a lot of work to build just one, lots of unique materials in them (ramp sides, deck sides, end attachment, headache rack... all different materials that don't transfer to building the rest of the deck.)
The Mission decks that G force has are good decks, got a few buddies who run them & only complaints are that the rung spacing is weird on the ramp, so you don't get a great grip, and it's a little harder to get in the truck (front & rear frame instead of box frame like toyup & silver lake), for the price they go for though, hard to beat! Silver lake is a better deck... but they're more money. Costs me about $2800ish to get one here with superclamps before I make a dime... decks are a losing proposition money wise it seems. I've had two dealers wholesale them to me to get rid of them... so it's not just me.
Actually, just talked to G force just now, unfortunately Johnny, the last guy I sent down there to get one bought the last one. They were selling for $2300 with superclamps which is a killer price. He said they won't get more till spring... crappy timing. I tried buying from Mission at one point... they're a pain to deal with, but the decks are cheap!