TIF2 (Rich), thanks for posting on your use of Scott's bracket. As you said, the bracket was designed for use with the RF amp (hence the holes for mounting that specific amp), will work with at least one or more other aftermarket amps.
And as you said, because the bracket installs using the two screws that would normally be used to mount the SESG2 amp and iPod module to the HK radio, but must also clear the ridge on the HK radio that runs fore and aft, the hole in the mounting tab for the SESG2 amp won't line up with the bracket holes for the screws to the HK.
Perhaps you could test fit the SESG2 amp by placing it on top of Scott's bracket w/o, of course using the tab on the amp to secure it to the bracket. If the amp hits the outer fairing, that's pretty conclusive proof the bracket won't work with Scott's bracket, at least w/o modifying/removing the tab and reorienting the amp on the bracket.
If the amp passes the first test, put something under the amp to simulate Velcro and see if the amp hits the outer fairing. I suggest Velcro because Hawg-wired, Hogtunes, Arc (in its MPAK kits for installing the Arc 125.2) all use Velcro to secure their amps to the HK.
I'm not suggesting that you undo your installation of the Arc 125.2 amp. The "tests" are what I had in mind when suggesting that an SESG2 owner contact Scott to arrange a conditional purchase using the OEM SESG2 amp.
And, of course, many who have confronted the issue with the Arc 125.2 amp (i.e. needing to relocate a module) have done so successfully by Velcroing the module to the bottom of the HK radio w/o benefit of a bracket; that is an option for SESG2 owners to consider if they want to add additional modules while retaining the OEM amp.
Thanks, again, for the reply and look forward to seeing a thread on your audio modifications.
Carl