yeah @rene, this is awesome! And highly/completely inspire me 
I was waiting since last year to find a way to mount mini with a GD 
@BigBen, Jens ride them since at least 2016 !!
I’m on the Reaktor one 
I was working on different way to could adapt “every” Channel type drive setup on them 
(like I do with TKP (originally hex profile) working with every Caliber type truck 
And now, see they are all custom axle, and the one on the right (rear) is axle adaptor for screw-axle style (like Surfrordz or 1st BN220… just because cheaper) :
