The one with the chrome handle,wood frame,locating guides and hopefully the fitters,and makers plaques.
You will need to fit the wood frame,as it all attaches to that.
The good thing is,as you have the complete roof with it in,you can slowly take it apart,making notes,to see how it will go back together.
Also used the donor roofs hole to make a perfect template to cut your roof.
Is the webasto you have bought brown or black?,if brown does it match your huntsman?
Having no garage doesnt help,really need to be under cover if its a bit at a time job or at least a good dry long weekend.