My 1999 Winnebago Chieftain diesel motorhome is equipped with an Allison MD-3060 6-speed automatic transmission.This transmission is paired with the Freightliner chassis featuring the Cummins ISB 5.9L Turbo Diesel engine. It has the Onan 7500 watt diesel generator. Additionally It has one long slide that works perfectly. I also have the Dometic Weather Pro automatic awning with adjustable wind sensors that automatically retract it when the wind picks up. 97184 miles. Runs perfectly.