Quite possible. I know the boost hubs can be modified for different standards but I look into it regarding the qr hubs. I guess it depends when they were manufactured...Just an fyi, I think I'm right in saying that a standard 135 qr hub from hope can be converted with end caps, so you can widen your search if you're happy getting end caps if you come across a qr version
Im not 100% sure about that.Same with pro 4’s.
The only thing that gets complicated is the drive side end caps vary with the free hub.
Well that’s definitely not my understanding. I didn’t belive the do different 135mm hubs to the 142 ones.. only the end caps change.
Did you try the boost kit on the 135?