I too did a J&M headset install in my friend's Schuberth (He ride's a BMW and thought he needed a German helmet too!!). It went well. I used a Dremel to remove some of the styro to make the Dynaport speakers fit and we used his open face boom mike (secured under the metal bracket that clamps just behing the locking mechanism). You'll need some adheasive on hand to retack the liner. There's actually a link on the BMW LT riders board that has some good picts and instructions. If you want, I'll try to find it again.