swapping 84b2000 body onto b2200 frame?

I love my little 84 b2000. However, im not such a fan of it being 2wd and id like to make it into a 4x4 truck. I dont know much about b-series and i dont know if it would be possiable or how easy it would be to bolt the body onto a b-series 4x4 frame. What model comes in 4x4?

The Courier came in 4x4