I fitted a pair of these http://www.ebay.co.uk/itm/390635288167?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
They still heat up,just dont do the anti glare thing,which is no big deal really as just dip the mirror down if there is a prat still on main beam behind ;-)