I know a cheap one, not so sure how good they are.
After reading and researching, I discovered if I switch my triple assembly on my 2004 WR to a 06/07, I can do the YZ twin chamber forks. Ebay had a good looking 07 complete tree for $70, and there are a couple sets of forks, one will probably be mine for $150 tomorrow. Yes Virginia, next year is looking up.
I know you know your bikes Tim, but you do need to insure they are the twin chamber 07 (maybe 06) up. There are slight changes in caliper mount also to consider.