My 11" et32 rears are just about flush.. maybe 5mm poke. You can also run like 11" et40 and be sunken in.. there's plenty of room on the inside/shock side
http://robszot.net/wp/wp-content/upl...1/12/rears.jpg
This was 11" et20 so take 12mm off that and it's flush.
http://farm5.static.flickr.com/4039/...ccdae763_b.jpg