Awd c10?

[FB85C10]

what would it take to make my 85 2wd c10 into an AWD c1o? has anyone done one of these yet? what is all needed part wise to build one and does anyone have pics of what was done, just curious? could I use 2wd leaf spring up front with a 4wd front axle on my 2wd frame? what kind of mods would I have to do to get the front perches mounted on the front of my 2wd frame or is it even possible to do since I don't think it bolt right up? if so wat year front axle, springs or whatever would I need to do this? let me know thanks!!