Again, gwem, this isnt a guitar thats going into my own collection and if I wanted to try out something as easy to swap out as tuners, I'd just put some on one of my guitars.
Its to practice doing less common but in-the-grand-scheme-quite-numerous maintenance and modification tasks on that are potentially damaging to the guitar if you do a devries on it. The primary objective is to familiarise myself with the use of the required tools and techniques ascociated with those mods to train me to be able to do it to a standard that I can apply to my own instruments in future, and when I'm suitably shitee hot at it, sell as a service.
Not to try out gear!!
Sorry, Wez, I dont know anyone with the transtrem. If I run into one that I can arange access for you to then I'll tell you.