Im lookin at a 1999 ford f550 flatbed. I like the truck but it is not a 4wd and thats what i need to use on the farm in tennessee. I want to know how much it will cost for me to convert it from a 2wd to a 4wd. thanks

 

Keep looking that is a big job. Probably much more than you paid for the truck. Just my $.02

 

That conversion isn’t real hard, a 4wd axle bolts in place of the F-450/550 straight tube front axle so that is the easy part
You’ll need a 4x4 transmission and transfer case and then mount the shifter
The present mid shaft can be shortened but you’ll need a donor front shaft or have one made

 

OP is from 2010 and was one and done. He might still be on the farm, but he is long gone from here.

 

Didn’t look at the date
It popped up in the large truck threads as a new post
I’ve been getting weird stuff like that lately

 

Easy to overlook the op date when someone else has dug up the thread. No autopsy, no foul.....