Try the following link to FlightLine Solutions.
http://www3.bc.sympatico.ca/fliteline/
This site is run by a couple of Fox fans from Canada, and in my personal opinion, has more information, and is a better site, than the one Fox has itself. You should be able to find most of the answers you need there.
BTW, I used to live in Fort Smith, AR, where the Fox engines are still made, and have had a personal tour of their facility a couple of times. If you are ever in the area, I am sure they would be willing to show you around as well.
Regards,