Thanks for posting this here on APUG! I think it is great to put it here where it can be useful and will be preserved for the future.
I have a copy of your original website saved in case of future need. For me, just knowing that it is possible to make a DIY LED head that would work well with VC paper was important. I have an old Zone VI cold head light, and was worried about whether I should buy 1 or more V54 lamps for it while it is still possible ( they are quite expensive ). Reading your webpage helped me decide that I can use what I have for now and have other options if/when the lamp finally fails. So I would just say that I think the careful work you did characterizing the spectrum of the LEDs was also important, and not just the 4x5 conversion!