OK - I just fitted the splitter and after blood, sweat and tears!!!! I came across some small issues. 1. 10mm self tappers were too small - I used 20mm. 2. After cutting back some of the splitter I realised that the ends were not great looking - so I used the end bits from the previously cut flaps that I trimmed off and glued them to the ends of the splitter to give a nicer finish! 3. I used a heat gun to soften the splitter and mould to the contours of the bumper - this really helped near to the arches. hope this helps anyone else who is planning of doing this mod.