This is my take on linear rails for the x5s. These are designed for the 9MM tall gt2 idlers for a 6mm belt (factory size). You can use anything you want that fits a 9mm gap though. I included 1 x carriage with the back half of a v6 mount built in, and one that should fit the factory hot end (not tested with factory). The rear of the x carriage uses a bolt on holder for the belt, I use a long single belt so I can tension it then bolt the rear holder cap on for equal tension. If you use 2 belts simply bolt them both between the holder and attach it to the x carriage before attaching them in the front.
The hurricane mount will match up to the front end of the v6 mount for sure.