I just did this mod, it worked incredibly well. I eyed out all the measurements and used a pencil to mark. having a frame to match made it very easy. It's an aftermarket trigger so instead of having to extend it I actually had to shave it down on the side and end of the tang. I'm getting crazy bounce- I'll have to figure it out, maybe I'll shave it down more. here are pics:
someone should sticky this or something.