Bill
These lights are simiar but not identical ti those used in a Vauxhall Viva
The Vauxhall Viva club
http://www.vauxhallviva.com/home.html
sells mounting brackets which are close and can be modified to work but are very very tight for space inside the front light housing and if you have already cut the aperture holes will probably snag! (Same units used on a Sanderson bus)
That said Geoff Gear took mine off me and had midified them to allow adjustment from the front of he car (as per originals)
The bulbs are available over here without need for adaptor rings - I believe about £5 each - neet to check as I need to by a pair for my car. They are the lower wattage units - something lihe 45 / 65 watts
I'll e mail Geoff and ask him to post pics of the adjusters after the mod.
Paul ended up bonding in some metal brackets into the rear on my car (DAX Build up) in builders section - the metal lug locates on a hole on 1, (Bottom left) The top right is bolt fitted wit a pressure spring to take up slack and do rough adjust and the others are for the alignment.
Good thing on these units is the (finally horizontal) bottom bit is metal and can be drilled to take a side light bulb!
Ian