There are 2 version of ducktail. Both at quick glance looked the same, but they have minor difference. The ones on ebay, is slightly bigger and fatter than the ones some members here got from Thai. The one from ebays have to be drilled into the boot, notice the 4 round metals behind the ducktail. Defyant will be able to clarify + confirm this. Whilst the ones from Thai, Sikaflex is enough.