Given all of the above. I must say that I love my car!
To address the above mentioned problems :
#6 plug wire - My mechanic (when I don't do it myself) changed the routing of the wire to be away from the exhaust manifold and so far it seems to be working well.
Dex-cool II - JUNK! - had it removed, the radiator rodded out and completely flushed. Now running the good old "green stuff" - no problems!
Daytime driving light shorts - drilled a drain hole on the light housings - no problems since.
Window Seal leaks - I stay away from high pressure water.
Headlight motor problems - There is a nylon gear inside of the headlight motor. This gear connects to a metal gear... (the nylon wears out, Duh!).
Replaced the nylon gear with CNC machined brass gears (available on the web) at a cost of about $40 each motor (A replacement motor runs about $150.)
I have had absolutely no problems since)
From a performance perspective it needed some tweaking and tuning in the airflow area. The addition of an SLP Cold Air Induction and a FlowMaster exhaust REALLY added to the Seat-Of-The-Pants kick that this car has.
I drive my car hard and fast all of the time (it is my daily driver). I maintain it meticulously (pure synthetic oil and high grade filters).
When the engine and/or tranny finally let go, I will put either a short-block 350 or an LT1 in it and just keep going.
This is simply the best car I have ever owned!!!