Hi Menchhofer. I bought a set of Peanuts' stickstoppers for my XT in the early Fall. I think Peanut said he was changing the design somewhat because of the opening size difference in the A arm's year models since mine was diffferent. So I'm not sure of what dimensions you have. Anyway, the opening I am speaking of is in the A arm by the ball joint. The holes in the bottom plate (with the sides) are sandwiched on the A arm by adding the triangular piece to the top side. Then the holes in those 2 pieces are lined up and bolted on, making sure that the holes in the side are also in alignment for the curved pieces to be added. On the wavy curved piece, I put the sloped side toward the tire so it alows the tire to turn as it should without interference. On my 2011, I did not use the sandwich pieces because I need the A arm opening for cleaning out manure I drive through every day. I just bolted on the wavy pieces in place of the plastic ones. I don't need the rear protection yet given by the "sandwich" This is my account of how they go but I could be wrong. Good Luck and others will chime in if I'm not correct. Good Luck! bordercollie