Here's my old Hyper 7 PBS converted. You pretty much just have to line it up the way it needs to be, if you need to drill holes do so. Like Brian said, that tolerance is tight between the spur and tray, so make sure the strap isn't going to catch
http://i59.photobucket.com/albums/g3...7/DSC01070.jpg

Now if I could get ahold of a servo mount like the one you have, I'd like to have mine laying down.