In Fl, no matter what you do to make it a dually, the gvw is still the gvw the mfg rated it at, insurance liabilities if something were ever to happen, could fall back on you.

i kinda figured that'd be the responses. I think the route we're going to go is to sell it..the bed is so beat up on it that I doubt we'll get much out of it..thats why i was curious about the conversion.

if it is white and a long bed, there is a shop by us that has like five of these ford beds single wheel, on the ground from doing the heavy bed conversions can check into a price if you like?

the 250 & 350 are the same trucks. just different stickers, tires, & the 250 has a smaller spring block at the rear axle. they both have the same gcwr (towing). there of course were different spring packages available. however they are the same from 250 to 350. if you really need the dual wheels however, my opinion get a different truck. I run a 2001 250 with a heavy spring pkg. and changed the spring blocks. tows and handles weight great.

Check with shops in your area that do utility boxes and see if they have any take offs. You can get a great deal on a complete box that way, sometimes in the correct color.
New from Ford there around 3500.00 to 3800.00 complete.
I sell them wholesale for 25 to 28 hundred.

we ended up putting F350 SRW rear spring pack on it, new shocks and a full flatbed. Being that we HAVE to stay under GVWR for insurance, its now a dedicated hotshot truck. With our flatbed gooseneck, that was the best way we couuld still utilize the truck without spending the money to upgrade to a new truck and not have a driver to fill the seat.
The trailer is a little big for the truck, we just dont fill it to capacity. The rear springs DID make a difference. Before we put them on, we were on the overload springs with more than 1800# on the back. Now with that same amount, we have about 3" before we touch the overloads.

Thanks for everyones help..

Are the axles the same diameter for the srw vs drw? We used to make dually's out of f250's in the early 70's for wreckers and the axles would break from stress.

XACTLY buy the 350 and move on !

I converted a 1/2 ton Suburan to a 1 ton back in the early 80's. Bought the rear and front clips complete out of a wrecked one ton. Had to drill the frame to fit the front A arms. had to get a u joint made to jump from the bigger rear end to the drive shaft. Got fenders from a place in CA. The truck was much more stable on the road when towing, but I had to give it away to get rid of it.