I drove two 944 for nearly 18 years, put over 250,000 miles on one, the other had about 80,000 miles but was totaled by a bozo who plowed into me while I was sitting at a stop light , I enjoyed both of them a lot
( still think they handle better than our 68s.. probably because they are lighter.. ? ) though after having driven your 68, you will feel like you're at the wheel of a slug - they are sooo underpowered ! - so be prepared for that aspect. However, for less than $ 4k , there is no better car out there, IMO.
As for problems: I neglected the h*ll out of those cars, I probably changed the oil no more often than at 20,000 mile intervals, never flushed any coolant or break fluid system, never replaced parts as a precaution because they would have met their mileage or timeline, I did however change the timing belts every 50,000 miles or so.. and the engine, transmission, suspension on the car after 250,000 miles had no MAJOR problems, still running perfectly well. BUT, I went trough countless motor mounts, several water pumps, one steering rack, a few wheel bearings, one roof mechanism repair, a couple of window motors, and three clutch changes, IIRC, with that car. Oh, re clutch changes on 944s - it's not separately housed as the 68s, so the tranny has to come apart for the job ( pricey labor, unless you're a DYI-er )
The other 944 I think only had two motor mounts changes and one water pump replacement, up to the 80,000 mile mark.
Yup, limited color choices in the 44s, but I liked mine ; one was "saphire" ( sliver with a slight blue tint ) and the other was metallic "sand" color.