Get a New Amp, a DSP, and New Speakers. This will be an improvement. Next level improvement is a new subwoofer. HUGE improvement will be new pods in rear with quality speakers. I have different "tuned settings" based on 1. Roof off, 2. Roof on, 3. Roof off with pods rear facing. Have fun!
One of the first things I did was upgrade the sound system. Stinger base on rear door, amp, new speakers all the way around. Volume is not my issue. I've also had the rear top off since May. I just wish XM was reliable.
I don't remember the number. They both look the same to me. Update: I did have a major storm blow in. Water pooled big time....but that 303 spray did the trick. No leaks.
No doors and no top. Took them off for the summer. I use mine regularly. Sprayed it with 303 waterproof in April. It's been through many thunderstorms and heavy rains. No leaks. Front mirrors are tight to get on but no real issues. My light bar is probably the cause.