Most models were fitted with Rutenber Straight-6 engines and Grand Lees or Muncie gearboxes; some, however, had imported OHV Ansted engines instead.
This is sort of exciting to an auto history geek like myself... like discovering you have a cousin down under. Grand Lees doesn't ring any bells at the moment but Ansted, Rutenber, and Muncie were all automotive companies based in central and eastern Indiana. This Muncie is the not same outfit that made the well-known Muncie four-speed transmissions for '60s GM cars but is related to it, as are Warner and Borg-Warner -- H.L. Warner was originally the president of Muncie Gear Works. The Waterwitch outboard motor was also manufactured by this company. Ansted once manufactured a car under its own brand, as well as the Lexington automobile for a time, but also supplied engines to a number of carmakers, including Auburn and Durant... as did Rutenber, which is a mildly interesting convergence.
Ansted was actually a cluster of various companies in Connersville, Indiana, controlled by A.W. Ansted, most of which supplied the automotive industry. The Ansted interests were absorbed by E.L. Cord and the Auburn Auto Co, and his umbrella firm, AVCO. The main Auburn assembly plant was then relocated in Connersville, while a former Ansted company became the Central Manufacturing Co, which made bodies and pressings for Auburn, Willys-Overland (incl. the WWII Jeep) and others. The confusing tangle of companies also held a good portion of the appliance manufacturing business (washers, driers, ranges, refrigerators) for many years after the war, selling under a number of brands and manufacturing for others. Additionally, the grandson is the Bill Ansted who sponsored or owned a number of Indy car teams in the '50s and '60s, including the A.J. Foyt Sheraton-Thompson operation.