i did the xtra10 swap last year from a 98 xc 700 into my 93 440, worked great! but it was a little soft for my riding and tends to bottom out, last night i tried to move the stop blocks for the scissors to the front hole and when i tested it, it was extremely stiff and when i tried bouncing on it with a buddy the suspension went strait to the floor and was binding, i moved the stop blocks back to the rear hole for now but im looking for the measurements from the front torque arm mounting point to the rear mount point. cuz i think my mount points are just far enough off to make it bind when the blocks are in the front hole and be perfectly fine when theyre in the rear hole, i know its between 22 1/2" and 23" and that some years varie lol i think i got the varied one