Great questions!
Once this system becomes a GO, the axle-back will incorporate a mid-pipe option so those with the current AWE will be able to swap out with their current leading system for the 6thGen Camaros. If everyone keeps the emails coming, Each week I have bundled them and sent a single one to my contact at AWE, he's an avid boater/fisherman and loves our Kraken... so this helped in even getting all the individual components I selected for my test kit assembled, welded and shipped at quite the cost... it was more than the entire system I have including the ARH headers, so yes, I'm ALL IN!
The sound at idle is actually very quiet no matter if the valves are open or closed due to the exhaust expanding into the crossflow muffler and smoothing the pulses out. Its truly one of the most iconic buttery sounds as the pulses cancel each other out to provide this amazing tone.
As for the Caddy parts... they are. cheap and easily found online because they are still available in production.
The Cadillac valves are on all the CTs and Escalades and can be bought for less than $75each.
As for clips, I shot the videos linked here, but have been testing other cars at the track this month, travel to Hendrick Motorsports, VIR and Road Atlanta with private events to sort out a customer's ZLE & Lamborghini Super Trofeo.
When I get the approval for this system, I have to take my ZLE to AWE for the actual fitting and kitting. I am trying to coordinate this with the shop building the 10L90E valve bodies so one trip encompasses both upgrades.