No doubt HIDs are bright, but VERY pricey!!
Honestly, Greg, I hadn't heard of anyone using sealed beams. If you'd like information on the codes by which you can determine which country various lenses are made for, and most lenses are made for left or right hand driving, check out this website:
Daniel Stern Lighting. (If any of you have
http://lighting.mbz.org in your book marks for Daniel Stern, this link will take you to his new address.) I haven't checked out his new address, but he used to have tables which defined all of the codes and markings found on headlamp lenses. He also has great information on "blue" bulbs, hid and just about anything you can think of which pertains to automotive illumination. If you do a search on headlights here you will find some pretty extensive discussions on low beam dip (which is the major issue where right/left hand driving is concerned) and which head light housings can be used in a GT40 - there are several. Daniel also had the best price I had found on the Cibie housings (they bought out marshal(sp) as I recall) which are considered the "standard." Try a search here on aardvark also; several people have paid way to much money to aardvark for these headlight housings. Daniel can also sell you bulbs of various power for the housings, but for these, I'd check with
Candlepower. (I found out that this is where Daniel gets his stuff

Right now I have a set of standard 65W/55W bulbs in my housings, but I have a set of 130W/90W ready to go in after I get the car inspected and registered. I got one of the last sets of housings that Andy at Tornado used to sell with the sidelights in them. I think the sidelights are just cool! There are some Renault (?R12?) headlights out there with provisions for sidelights that will work in a GT40 and they are available for right (French/US/Canada) or left (England) side driving (or is it vice versa? I can't ever keep it straight if it is the side of the road you drive on or the side of the car you drive from
In terms of making them work, you may have to get creative. My car had very different clearances from one side to the other; bracketry for mounting/adjusting was pretty straight forward on one side and took a lot of "fitting" on the other. I would think that the DRB would not suffer from this asymmetry. My headlights just extend out of the openings, as Peter D. has described, as well. Mr. Delaney knows of which he speaks and is worthy of close attention! (you can send me the check later, Peter

Also, I would think that Denis could give you guidance on this or, perhaps, Peter at GT40 Australia.
Regards,
Lynn