Here is a link to it. There is one time install where you have to mount the connectors at the stock seat belt bolt locations. Takes about an hour. After that they only take a few min to put in and take out.
For her Z, I would like to get her something similar where she can take out the harness when not in use and put it back in before track day.
As for her seats, I will have to wait to take a pic tonight. But she has a new Touring with the Sport package if that helps.
https://www.schrothracing.com/tuning...fit/qf-vw-audi
Thanks