Is there any way to move the passenger pegs out to clear the bag?Couple of corrections;
That part number (BDM210-00084) is made for the right side (exhaust side). Part number BDM210-00086 (or similar) is made for the primary side.
The bracket modifications are not complicated -- something a kid in 8th grade shop class could do. I remade the OEM strut bracket for the left side as it didn't hold up....you may want to make a better bracket anyway as the original metal is too thin. All you need for the K-9 is to make a bracket to mount under the forward strut bolts -- plenty of thread there to work with.
http://www.bigdogbiker.com/forums/how/220-stash-bag-bracket-cracks-how-make-new-one.html