Yes sir I would. The factory wiring is crap and WAAAYY undersized not to mention old. I would highly recommend it. Its not too hard either. Just bigger wire to the alternator and starter if you want. Check out my build thread in my sig. I literally just did an alt swap and have pictures of all the wiring I did if you want ideas as to how to go about it. But yea suck it up and just run bigger wire.
89 YJ.. My first jeep and I won't let it go. ▀||||▀
Current Project: None... I disgust myself.
<a href="http://www.jeepforum.com/forum/f22/my-yj-build-adventures-thread-1356941">BUILDING THE YJ MY WAY</a>