FYI,  ARB offer an Old Man Emu 20mm front bump stop spacer kit (#FK78) for the XL-7 and I thought if any GV owners needed them there was a solution. The kit comes supplied with the two (2) 20mm spacers and two (2) M10 x 25 studs. The proceedure to fit them is to remove the original bump stop from the vehicle. The bump stop is held in place by a M10 retaining stud. The retaining stud needs to be shortened to 10mm long. The spacer then threads on to the standard bump stop. The supplied M10 x 25 studs are then threaded into the spacer and then re-installed in the vehicle.