I've found the yearly .pdf Krause Racing gives out as their tire catalog is one of the most informative sources on tires. I'm not sure the Dunlops you are talking about are on there, but you gave zip for information.
The only Dunlop tire I know anything about (and not much at all!) is the Dunlop Post Historic. I've seen them used in some vintage racing and I love the look of them (very vintage looking) but that's about my extent of involvement. I sure would like to talk to someone who has used them over a period of time though and get some feedback!
Larry