first, read the C4 Audio FAQ.
Second, don't do a double din head unit. They are a) expensive and b) limited. For the most part, they are larger, but no better then the the same single DIN that sells for $249.99.
I suggest Alpine or Eclipse.
I have an Alpine 7998 (discontinued) in my 1992 coupe.
Also, the bose CD player should work in your car, even if you don't have bose. It's an option.
The rest of my system:
JL Audio 500/5 - 5 channel amp
JL Audio 10W3v2 - 10" Sub, dual voice coil
Canton Pullman RS3 - 3-way separates, 6" midbass, 4" mid and 1" tweet, custom mounted in the doors.
That's it!