From what I can gather, they do very limited runs of Viper Wavetracs along with their unique stubs...something on the order of once a year or so based on anecdotal evidence.
Just be aware that their lifetime warranty, while nice, also relies on these limited production runs.
Bottom line: if you break something (and I've seen a couple folks that have broken the Wavetrac stubs), your car will be down while you wait on their next production run. The aftermarket doesn't give two ***** about limited production vehicles, and the Viper certainly falls in that category.
I've never personally run a Wavetrac, and I know a lot of people swear by them, but I'd seriously consider a Gen 4 or Gen 5 take-out as a backup. The OEM GKN Visco-Lok in the 2008-2017 cars is pretty durable in my experience, and it works pretty well. There's also quite a few out there, but you'll have to do some digging these days to find one.