I agree that using the KW frame would be a good idea. If you need an idea what it would look like check out Sinister. That's what they use and it looks sharp.
Although they look good on his bike...I'm still thinking I'm gonna shred up a pair of 3" bags. Since I'm getting ready to order a pair of TS bags...I'm contemplating 2.5" stretch. Kinda like putting extensions on.
The best way to get a really good idea of which bags you would like to get is to add on the " by measuring from the bottom of the bag down and taking a straight peice of wood or whatever you have laying around so you can see what you would be dealing with.Just an easy visual reference.
Thanks
Justin B