I also read the article. One part is incorrect, however. The E-35-3 was not bought or produced by PSC. The author is confusing this with the E-34 (late model "200" series) that PSC re-labeled the "Ericson 350."
AFAIK, all the tooling for the E-35-3 was bought at auction by a fellow in the Lake Tahoe area. So far, there have been no ads for it or notices in print that he he is building any.
Best,
Loren in PDX