kevmor99,
Search in this forum for "Runtz", There is a lot of information to be found.
Here is one thread: http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=3;t=000663#000000
There was a very good article by Randy Rundle on this topic in the January 2004 issue of "Auto Restorer" magazine.
Tim