Here is my 2c..
I bought my 97 GTS, after restoring many 50s and 60s muscle cars, I have many stories of matching numbers this and build sheet that...
Most people buying them, and myself included, loved them cars but wanted them to have all the modern day bells and whistles.
I am very anal about my GTS, it is with a dought the most beautiful car I have ever owned, but, now I have begun adding things I like: GT-2 wing, roof vent, side exchaust, interior up grade, probably up grade brakes and tires & rims, and hopefully next year super charge..
So do I want a race viper? or have I ruined my GTS? No on both, in my opinion, what my GTS will evolve into is something totally for me, If I was a collector or concerned about resale I would of bought a time capsuled viper.
If for some reason, 30 days or 30 years from now I needed to sell my GTS, I would get exactly what I want for it, or it would not sell plain and simple...
My thought is never about selling a viper at anytime sooner or later, but how I can aquire more of them, they are addictive.......I love all vipers