Welcome to the forum. The 986 is a great car and will keep you smiling for a long time.
To keep it that way here's a few items to loo into if you haven't done it yet.
AOS- this should be part of a routine maintenance item every 3-4 years as they are prone to fail.
IMS- as a pre-caution should be replaced
Spark plug Tube Orings. These tends to leak.

Here's one of best websites for DIY projects. The owner is also very helpful.

Do-it-Yourself Repair and Maintenance for your Porsche - PedrosGarage

You have a great looking 944. If possible you should keep it. Great examples are rare and demand for great example is high. I too came from Rennlist and I still have my 944. Both cars are great in their own way.

I love it when people drive their cars instead of staring at them in the garage, hope you rack up another 90km prob free