suggestions for a sound system upgrade

hey plp i just got an acura legend 91, those cars a sweet, the battery died and the antitheft thing went on where i have to enter a code which i have no idea what itis i have looked in the manual so i am thingink of getting a whole new sound system dont know if to get woofers amp etc or just a regular deck and speakers AND PLS WHAT ARE THE MOST COMMON PROBLEMS THESE CARS GIVE?

yank the factory radio. I'm not sure if there's a factory amp, if so you'll have to run wires to your speakers to bypass it. FYI factory systems suck.

If you're gonna do it do it right. Infinity or polk highs and JL for the bass. Can't go wrong with an Alpine head unit. (You get what you pay for)