Next you will want to change out the speakers. I ran the stock for a couple months. Really wish I hadn't. Crutchfield has Blaupunkt and Jensen speakers that fit perfect (besides needing four screws instead of three for stock) and sound SOOOO much better. I put the Jensens in the rear doors for the added bass and the Blaupunkts in the front for the full range. If your dash tweeters aren't making any noise, run them. I haven't found anything that will fit that sound better enough to warrant the cost/PITA to install them.
The one thing I did quite different was I put a 160W Pioneer home stereo powered subwoofer in the cargo area and powered it with a Harbor Freight 400W inverter. Ran RCA cables from the head unit down under the center console and the rear seats to the sub.
Main reason I swapped out the radio was because the stock one kept fading out and buttons didn't work all too well, as I mentioned this thing was sitting in my garage for years so its noting special or new but it is way better and does have some cool options. The mega bass is sick, and you are right speakers might be next on the to do list, they work fine but could be much better. Thanks for the suggestion
If I can ask, how difficult was the speaker swap out job?
I will have to take a look at your recommendations but know for sure I don't want to spend too much, how pricy were they?
The ones I'm running were $24 with free shipping (which I can no longer find on their site).
The biggest pain was getting the door panels off in one piece without breaking any of those damned little plastic retaining plugs. I finally swallowed my pride and let the local car audio store install them for $40 each pair. Well worth it to know the install was done right. I tried doing it myself on my last ZJ and I ended up having to put screws through the door panel to keep it secured to the door.
No offense to the audiophiles, but I'm too old to spend to spend hundreds (if not thousands) of dollars on speakers to get a 5% increase in sound quality when I can get most of the way there for $40.00. Especially in a 16 year old vehicle that I only paid $600 for that has the distinct possibility of ending up upside down in the rocks due to a ****ty spotter's misdirection...