Referencing X5SND's thread:
http://www.xoutpost.com/bmw-sav-foru...s-you-say.html
He used 120/140mm full rings, I think mostly because those were what was offered from TRS/Morimoto. Post #51 he mentions that the 120mm is a tad small and probably a 125mm would work perfect. Honestly considering its probably 1 to 2mm difference on either side I would probably just try the same combo (125/145), or from hid.lighting order the 127.5mm and 146mm semi-circled rings, they should work. Again, it's not my housings but the tolerances are definitely close enough.
