I've answered it twice, now three times: It's not possible to use a harness with the stock seats. There is nowhere for the belts to route. They would just fall off your shoulders.
Last time I talked to them, this is what it can log from CAN:
RPM
WaterT1
AirIntakeTemp
Speed
OilTemp
OilPressire
EGT
Gearboxtemp
WaterT2
Lambda
ignition angle
ignition angleZyl1
ignition angleZyl2
ignition angleZyl3
ignition angleZyl4
ignition angleZyl5
ignition angleZyl6
Boost Target
Boost...
No, that is a private track hence the initiation and dues to become a member.
We have something similar here in NY and it's MUCH more expensive. https://www.monticellomotorclub.com/membership/
Only rich people do that. Normal peasants like me do normal track days at non-private tracks.
That is because Club Racers are for outside the JDM market.
I just grabbed a set of PMU 999's at RHD
https://www.rhdjapan.com/project-mu-front-brake-pads-type-racing999-gr-supra-rz-bmw-m-sport-4-pot-fast-track-package.html
If you don't want that aggressive, the 777's might work better for you...