So....I have a 2013 Grand Sport. Love the car and love the C6. However occasionally I would like a little more get up and go. So the question is, do I go out and throw a supercharger on it with some exhaust ($16k) or go pick up one of the C6 ZR1’s that are currently on the market. When all is said and done the ZR1 will increase my net investment a little over the cost of my GS with any ad ons. But will the ZR1 retain some additional value that my GS would never see. As well I am assuming that performance modifications on my current car may hurt my resale down the road. Not interested in a C7 at this time.