Permission to be a complete pedant/aero geek. Technically none of the aforementioned front valance apendages are actually splitters. A splitter is a horizontal projection from the base of the front air dam, intended to tap the region of high pressure air directly ahead of the vehicle to create downforce. None of the standard VW front air dams work in this way and are thus not splitters.

P.s. Yes I will be fitting a VR6 front dam to my 'Valver when I get around to it.
S.M.