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Good question lol. I bought them off a local guy that never used them so i'm not sure. He did run MX and they're +3 so i'll just assume they are the MX version
My Roll +3's have the same length shock as you are running. Wish I had that frame of yours to narrow my ride. Thus the reason I got the Roll XC's...I should probably measure them. Not sure if they are +.5, 1, or 1.5. They take the 400ex/06 450R spindles which add .5" so I'm guessing they gotta be a fractional size or maybe not. Now I'm curious dang it.