hi Dan,
finding RHD Q45 projectors will be tough but hey let me know if you find a couple of them :P
the guy made a few threads on his progress, my advice is to take your time and be patient :)
good thing you got spare lamps for $4. these projectors are around $400 a pair
http://www.hidplanet.com/forums/viewtopic.php?t=3708
http://www.hidplanet.com/forums/viewtopic.php?t=17388
http://www.hidplanet.com/forums/viewtopic.php?t=17543
http://www.hidplanet.com/forums/viewtopic.php?t=17189
http://www.hidplanet.com/forums/viewtopic.php?t=18006