I have the "fake" Delta xenons (
http://www.deltalights.com/products.asp?ptid=572) sold by Mustangs Plus. They are very good & look good on my 69.
I've been looking at the BMW E34 (old 5 series) or E32 (7 series) projector lamps as well, they have the correct diameter, are separate hi and lo reflectors, and have a ton of OK priced upgrades available like HID xenon, angel eyes, blackened lenses etc. I'm missing an extra set of headlight buckets at the moment, so project is stalled a bit....
If anyone has looked into this as well, I'd be very interested in experiences.