You specifically mentioned two GM models, not a damned bicycle. Christ.
They've gotten progressively better but you have to watch out for the way the G20 and older G10s are configured ~ they do the same job but they hook up almost exactly the opposite of the way the other one does.
Yes, the most recent one had reached the stage where it had a titanium casing JUST LIKE you would get on a lockset for a controlled access executive suite restroom. Had one of those break in our office years back. Took a special drill bit my father had given me years ago to bust it up so we could get the door open. You can imagine the anxiety while I cut and cut and cut and it just didn't want to give it up. Titanium casings are pretty tough.
Take a real close look at the valves Rossi lets you see ~ tell me what they are.
I raised this issue with the first photos way earlier last year. He's not just using ordinary plumbing.