switching to 4x4/ and coil spring ?

i was thinking of making my tracker a 4x4 because its only 4x2, but also its auto, which i want to make it manuel also. what in all will i need beside the tranny and transfer case, with all the stuff to convert to manuel.
IE will every thing bolt up even tho it was a 4x2? like the front hub, do i need new control arms as well? is the rear drive axle shorter on the 4x4 than a 4x2 auto?


also beside that ideal, the previous owner decided to lower my car buy cutting the coils, and of course he did it with a cutting torch so now my car likes to bounce. so im trying to find new coil to bring it back to the right ride height, so where can i buy them? i haven't found a place that sell them yet!

thanx for the help!