Upgrading their old ST1 to go faster?


Anyone make any customization to their old 2015 ST1 model to make it go faster?
Modification like adding mid-drive motor and additional battery?

I don't even know if mid-drive motor kit will fit or not from Luna Cycle.

I have looked into Front wheel motor/battery combo kit but as Stromer ST1 does not have standard front fork, I couldn't find any that would work with ST1.
As bike is getting older and its heavy, riding up hill and also top speed has taken a hit; and would like to make modification to add additional motor & battery to make it go faster with higher torque.
If anyone has experience or suggestions please let me know.