LED's for an enlarger.

I am questioning the type of LED's to use for an enlarger light source. I'm interested in making an LED enlarger head board to replace my old coldlight tube in my Graflarger. The Graflarger transformer went bad and although I could probably replace it I could just as easily produce a LED board. I am looking to use the LED light source to produce a contact interpositive for subsequent enlargement to a negative.

LED Head

Theres a guy named Huw Finney who posts on P-net that has published an article on building an LED enlarger. The article is for a VC head, but if you google him and find his website, I think it will start you in the right direction. he has also put a 1 asa meter in a Leica IIIF or something.

Eric

Found the site Eric, thanks.