I have the opportunity to get a 91 d350 dually 5spd. but come this winter ill probably need 4x4. So how hard is it convert to 4x4? Or is it worth it to have the dually and the 5spd? I do tow a goose neck for work and i have two horse trailers.

 

i would go for it, you may regret not buying it in the future

 

buy it. isnt your 89 250 a 4x4?