So disrespect intended here, but you guys can do what MH is doing very easy. Why not try before ordering/waiting?
Did mine the night before last, went to the dyno today and here is what I got:
Increased 2.1 ft/# and .3 hp over what I had at peak, good news? Yes because at 6500 rpm I got 5 ft/# and 5 hp over my "small mod" airbox. I got more (2-5 ft/#) all the way from 1500 rpm to 6500 rpm.
Yes I am happy, and wish to thank MH for his time and dyno runs. Buy guys, this mod is an easy thing to do.