Yep, I know this totally kills the legality of the car for the official Trinity rules. Our LHS does not enforce the Trinity rules too hard, and we've pretty much all switched over to "stock" anyway, so these mods are totally legal there.
On top of that, my LHS has had these parts backordered for over 2 months that I know of. This leaves the owners in the unenviable position of either buying new cars or installing "unapproved" parts. Given the difference in cost, many are going the second route.
On the other hand, I just bought a Pro4 and am loving every second of it. But I'd like to sell my T-Spec, and I can't do it with a clear conscience if I know it's on its last legs and there are no parts available right now. Thus my grand quest to resolve its major issues and get the cars up and running again. But like I said - if anyone overseas can find parts (or if you can tell me the exact model of Kyosho from which this car was stolen) then I'll happily go that route instead!