Yes! 5K is a steal for that! Do it!
Exhaust mods are easy and cheapish depending on what you go with. I just wrote up my experience on a thread started by farmlifer. Just understand that all exhaust mods cause drone, it's all about what you're willing to accept. Desnorkeling is the one thing that you can do to improve sound with no drawbacks that I see.
Minor performance improvements are relatively straightforward but no earth shattering. Underdrive pulley is probably the one that actually works to gain a few high end horses. Intake mods are easy as long as you don't change MAF body housing size. T160 tempostat change makes my engine run cooler, but that is a debated topic.
You'll find that maintenance on these cars can be challenging but if you can turn a wrench then just study this forum and you can fix just about anything. The one thing worth mentioning here is the IMSB. The forum is full of info in that, make sure you read that carefully before buying. Also, if it hasn't been done already, expect an extensive overhaul of the suspension. German rubber is uber strong, but 20 years old is 20 years old and I thinkost guys wind up replacing about everything rubber on the car during the first few years of ownership. Barring any major mechanical problems, it will probably drive like new with a little love! And just remember, she'll thank you for driving like you stole it
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