norbtx, when I got my 108 in Dec. 03 the PO had used a strap of light steel/alloy, like is used in some car radio installations as a backstrap for mounting or perhaps from HVAC supplies. This strap had regularly spaced holes in it and he just bent "J" shapes into either end, mounted it to the bumper and then used stainless allens to mount the plate through two of the strap holes. Its discrete and effective. Make sense?