Well, Don, one of the things I was really wanting to see is what is the exactdifferences in the stocks. I was kinda hoping the rear hole in the rail stayed the same and just the front hole wouldn't line up.I could have drilled and tapped a new hole in a NY minute, but would guess Excal put the kibosh on that!!I was real hyped up about this Vortex, but was shooting the Phoenix [280 -290 fps] w/ a Leupold on it, amazing myself at 30 yds, bearing in mind I've shot this thing literally thousands of times, lol, when it dawned on me all I was gonna get was maybe a few fps and a new stock that only time would tell if I could do better w/ it. Until just recently, I had 4 xbows up here, lol. A man's gotta know his limits, lol.