Couple new to Cup car questions.
 

Tried looking through the docs that came with the car and can't find the info. 991.2 Cup.

Transport rings. How do these come off. Insert breaker bar between ring and loosen? How do you re-torque then for transport?

Battery Charger Cable - I see where I can plug the car in to charge the battery if needed (passenger side) but the cable plug looks like something I do not have. (cteck units is what I usually use on the normal cars)

Looks like the 98 RON rating for fuel converts down to USA 93 octane to run the car on correct? - Solved this. Need Sunoco GTX fuel