Totally not worth the hassle. It's going to cost you much more money to make that older rearend work than to get a new one. The old 8.8 (93' and older), is 4 lug instead of 5, it's narrower, and it has drum brakes. In order to put it in, you would have to have to get new wheels that had 4 lugs and a larger backspacing for the rear, and accept that you are going to have different wheels, or convert it to 5 lug axles which is going to cost about $500. If you keep the drum brakes, you are going to have to change your master cylinder out, and remove your ABS.
Kurt