I have heard of it being done, and have a WB limited chamber I plan on putting in my SN SJ eventually.
From what I remember reading, it required hammering, bending, and even altering the gas tank, but that it provided more brap off the start than the SJ limited chamber.
When I reinforce my SJ, I plan on doing the fitting/install prep.
Be cool to see pics , so be sure to post them up if you go for it! :brap: