i love Sublime so this was a great listen! very cool track. loved it. ending made me laugh ;p my only suggestions might be:
1) (next time u record them) double mic the snare, one on top, and one underneath but reverse polarize the underneath one so the sine waves aren't canceling each other out. then mix the two dead center pan but dial in the lows at the bottom mic and compress the top one, adding a tiny bit of tape echo to the top one ( almost under the threshold of hearing ) & one that also decays quickly. the combined effect will give the snare an even nicer 'whappp' on the ska downbeat.
2) the bass needs to be compressed more; also parametrically raise EQ around 80-175 and shelf it off below 40. this will give it a larger more reggae sound but not muddy. the bass sounds mic'd- sometimes i think it's better to go direct [out of a tube head or preamp]
3) dial down the treble in the guitar a tad and boost the mids and low mids. could also pull it down .5 of decible
-Daren :)