Tom, there is a gentleman in Texas who had an article in the Contact Magazine in late 09 or early 2010, who has a new model of the Marcotte PSRU on a Subu with the constant speed prop, I don't know the issue off hand as my machinist friend has all my magazines relating to the Marcotte, as well as my redrive, to make a seal retainer for the output shaft and tap the redrive for an oil cooler and a temperature pickup.  If someone on this site has the Contact Magazine it has the e-mail address of the fellow in Texas.  I talked with him last summer and he had over 80 hours on the PSRU and was happy with it.

Contact Magazine can be reached at Editor@CONTACTMagazine.com  and Patrick Panzera the editor will help you out for the article.  JohnD