Hi
I just got a 07 Yukon XL.
Now when the winter is here in Stockholm, i need to put my roof box/ski box on to my truck.
I still have my box (brand Porsche) from my previous car Porsche Cayenne.
I want to use this one, but iīm not sure how to attach it to the crossbars on the Yukon.
What do people use for attaching boxes on the oem crossbars?
(The box is made by Thule).
Thule is a very common box over here, but they donīt have the pieces i need for mounting on the Yukon.

TIA