Curious as to whether and how you resolved the gear lubrication issue due to running the drive upside down. Looking at a Tesla swap project and contemplate running the drive (single in this case) upside down.
I'm actually in California. The traction/launch control is a small module that can be mounted anywhere you want. I located mine near the ecu as you essentially route the injector leads through their module. The traction control has a number of pre-sets (6) plus a setting to totally turn it off...