SX sells two versions of the AO-LF. The QSI version should be identical to the standard version, except that it doesn't come with the OAG (since the WSG already has one built in). By the way, the photo for the QSI version on optcorp.com is incorrect, i.e. the OAG isn't included.
http://www.optcorp.com/sx-sxv-ao-sxv...ve-optics.html
http://www.optcorp.com/sx-sxv-aoqsi-...g-cameras.html
The AO-LF comes with a T adapters (and something else that I can't remember, SCT thread maybe?) for both the scope and camera sides. The adapters use the same coupling system as other SX devices, and the AO unit itself is also threaded at around 72 mm (from memory - I'd have to check to be sure). You'll also need a Lodestar guide camera to be able to use it in MaximDL.
It's been exceptionally useful for me, since I can image at high resolution using a cheap EQ6: round stars even at 0.67''/pixel. My recent images (
Cat's Paw,
NGC 1763, plus others not posted) were 60 min subs at 1.36''/pixel, all with nice round stars thanks to AO. It can also chase low frequency seeing and wind quite effectively.