these are for a GEN IV, all we are waiting to see is if it also fits the pre-facelift models....
As for the STI quads, when tangcla checks it on his car (which has sti quads) we should get a good idea of how it fits with those.
I have hitech quads but by the looks of it they will have to come off before the cruise on sunday, as im having issues.... i think they were fitting incorrectly (due to an issue with a spring mount on the factory pipe). i'l confirm fitment with the hitechs very soon after, though if it fits the sti quads, it will fit the high techs