how hard would it be to make my 2wd beam suspension to 4wd.

 

it would be easier and cheaper to buy another truck. depends on your overall plans for having the 4WD, but the 2WD is quite capable in moderate off-roading situations.

 

yea i know it would be cheaper to im lookin to build it into a trail rig over the years it was my first truck so im going to keep it and drive it until the wheels fall off. is it possible to do the swap?????

 

its possible....

just find one of the same style.....engine, trans, transfer case.....and start swapping parts.
....drive shafts, steering links....the list goes on

then it boils down to what type of front axle you want....you want to keep the TTB off the donor truck or are you going SAS?