jdeft,
I hear you on the reliability with modded cars. This car is a bit of an anomoly, I picked it up from Marty in Chicago & drove it all 1200 miles to San Antonio without a single hick-up (got rained on all the way to MO - found out Gen1's repel water like a screen door...lots of towels). Last year my wife & I took the kids in the Vipers to NM (Carlsbad, Roswell, Ruidoso, White Sands) and had no issue what so ever other than the VEC2 adjusting to the 9000 ft altitude in Ruidoso (tuned at 800ft in Buda, TX). I'll post a photo of the Vipers at White Sands Monument. Of the 5500 miles I put on the car, 3000 has been on 1000+ mile road trips, 2 Viper round-ups and tons of Hill Country Drives & VCA events. Never 1 breakdown, flat tire, etc. Lots of playing around whil under way.
Like I put in my ad and another post, all the problems with modded cars seem to be when you run at the ragged edge struggling to win the "dyno wars". This car has been detuned from day one & provided the new owner does not try to squeak the additional 30-40 HP out of the car they should enjoy years of trouble free & reliable operation at 670 RWHP. No full throttle under 2k rpm, cool the car down before putting it up. Change the oil ever 2-3k miles, brake fluid, etc.
Sales pitch aside - reliability is possible if you build/mod correctly & don't run it at 100% every waking moment. Reason why I detuned to run at 10:1 A/F with NO water/****. Also knowing the previous owner who started the mod process and understanding we have the same point of view on mods & not running on the ragged edge. Marty realized the Roe was not going to get him safely where he wanted to be HP wise (reliably) so he sold me the RT and bought a GTS with plans of doing a TT set up eventually. More benefits of buying a Viper in the VCA family.
Correctly modded (and tuned) cars are reliable, very reliable. 830Hp Paxton Gen3's on stock internals would be the opposite of my Gen1 for sale.