Yes, I have a 01 GTS ACR and love it, however as stated it is completely apples and oranges as to a comparison with a 70's era muscle car. It isn't so much that the viper is powerful (450HP new), it is how it applies the power, no or little parasitic loss thus more HP to the ground. They are awesome cars and I would not be without one if I could help it. I bought mine in San Diego from the 1st owner (ordered it new) and drove it back to WA state and smiled all the way home. Absolute thrill to drive and while there are not a lot of Bodies around, I would say I see slightly more Vipers perhaps but it never ceases to gather a crowd.
I will say this up front, driving a Viper (older one) is not like driving a muscle car; it is very unforgiving and will wrap you around a pole quicker than you can imagine. When you break the rear lose and counter steer, if you let off of the gas the car immediately goes where the front tires are pointed; it definitely takes some training/experience to control. This is not a car you nail it as you make a turn unless you really understand it.