ive searched but cant find anything on the tt arches. is it just a panel that you cut out for the vent or is it the whole thing.
its a portion of the liner that you have to adapt... I have seen a complete vented liner for the KM4 platform in the bora mk4.5...
TT liner
http://www.ecstuning.com/stage/edpd/pagebuild_v2.cgi/?html=learnmore.html&productID=5415
BORA MK4.5 liner
http://www.ecstuning.com/stage/edpd/pagebuild_v2.cgi/?html=learnmore.html&productID=251342