Zinc plated studs for the valve cover have stripped out.
The Magnesium valve cover has been slowly flaking.
Dashboard is cracking.
Hat rack is warping.
Engine occasionally stops in hot, humid weather when letting off the throttle abruptly due to faults in the Bosch KE-Jetronic mfi system.
Master cylinder is leaking into the cockpit.
After 20 years, all the rubber begins to need replacing. This includes brake lines, suspension bushings, weatherstripping, and water hoses.
Alternator died.
The stopwatch LCD screen is bleeding.
All in all this is a fairly well developed automobile. For a twenty year old, high performance sports sedan it is very reliable despite the large list of failures I have recorded. The car is very comfortable yet it likes to get up and go when you ask it to and can even handle better than many modern cars. I would have to say that the biggest disappointment is the lack in power. This engine, if outfitted with electronic fuel injection would be much more powerful and fuel efficient. 2.3-16 is a definite future collector's item with a rich racing pedigree. If you don't mind the high price of upkeep and the necessity of having a garage, then this would be a great piece of automotive history to own.
Dude! You had a Bonneville!