I'm one of the people you are looking for. I've owned my 96 GTS since it was 6 months old. I was very much waiting for the new Viper with plans to trade up to it. I've been waiting a long time to buy my next Viper. I strongly disliked the styling of the Gen IV cars (except the ACR), and was thrilled that the 2013 looked a lot like my GTS. SO.....Why have "I" not purchased one? I've been trying to figure it out. The car has just left me -cold-.
A big part of it is, I feel the 2013 Viper is more or less, a Gen IV with a DRASTICALLY improved interior, and MUCH better exterior styling. So, basically, they fixed the two things I hated about the Gen IV Vipers. I would have loved this car if it had been what was released in 2003. But, 10 years later it feels outdated to me on arrival.
The Vipers "cockpit adjustable shocks" can not compare to the technology and performance of GMs magnetorheological dampers that were in the OLD ZR1. GM has already come out with the next generation of them in their ZL1 Camaro and they are superior. The Vipers brake rotors can not compare to the insane Carbon Ceramic rotors on the OLD ZR1. GM's in house designed electronic rear differential found on the new C7 base Corvette is superior to the Vipers rear diff. GM's in house designed Performance Traction Management system is IMO the best in the world, and superior to the Vipers traction control. The new C7 Corvette Base model has technology where it adjusts performance based on the temperature of the tires. I just feel that from 2003 to now, the Viper has only seen the big hp jump in 2008. Beyond that, yes, I know there have been a LOT of other improvements, but nothing like the leaps and bounds that Corvette has seen. So much so, that I feel the Corvette has caught up to Viper with the ZR1 and even bested it in a few areas. What I fear is, with this new generation, the 2013 Viper has not moved forward and the new ZR1 will.
Secondly, the price. The SRT should be priced at $80,000 and the GTS should be priced at $100,000. As mentioned above, once you get above $100,000 a LOT of exotics become an option.
The biggest thing that ***** about owning a Corvette ZR1 is having people come up to you and say, "Ah, A Corvette. Man, I had one of those back in 1981. Bought it brand new, and MAN, that V8 was CRAZY FAST!". It makes you want to gouge out your own eyes because you just paid $115,000 for a 640hp killer, and the average person thinks it is the same car as his 185hp 1981 Corvette. That does not happen when you own a Viper. However......I admit that I am now waiting to see what GM comes out with for their new Z06/ZR1 for this new generation. Or....I may just keep my 96GTS and buy a Z51 base model C7 Corvette to park next to it.