Do the insides of the wheels touch suspension at ET20?
No got about 1" the standard gti wheels sit in more than 9" et20

Stainesy it's up to you. I had to pull my arch too. I wanted them flush. If you want poke then don't fit shims and just roll ya arch.
I've tucked my 8" et20 front. That was a mission lol when I first put the front on, they poked out about 30mm
