[onewhippedpuppy]

Crutchfield is a great place to start, excellent company to deal with.

Take a very good look at all your options, and try to find something that blends well with your dash and dash lighting. Nothing bugs me more than a nice black interior with a silver and chrome aftermarket head-unit standing out like a sore thumb. Unless you're an audiophile, most of the mainstream stuff should be fine. Ipod jacks are nice, and some of them now offer Bluetooth and a mic for handsfree cell phone use. I believe you can also use Bluetooth to sync with the newer Ipods/Iphone. Some also have USB jacks for memory sticks. If you think you might want to add an amp and subwoofer at some point, buy one with 4V pre-outs.

If your 993 still has the factory speakers, you might consider replacing them as well. 14 years on speakers that weren't that great to begin with, you'll be amazed how much better a nice head-unit and new speakers make it sound. Even the basic brand name stuff will be much better than what you have, and cheap to buy.