Please keep us updated ! I'm in the same boat. I currently run the arc mags and am running them at 2.970 with is .020 off with 140 vld's. Wyatt's showed 2.990 for the prc box , the extra .020 would be niceFound some info on the hide where it's been done. I ordered a Wyatt's PRC box and my Smith is going to look it over and see if it can be done.
Gunsmith just sent me this. Should get my hands on it in a day or two. Wyatts box is in and functioning.
I should get the rig in my hands tomorrow. I'll post some pics and get the down low from him on what had to be done.
Yeah also curious if the origin action required any modification to accept the extended Wyatt.