CAT 3116 Engine with Allison 6-speed automatic transmission. 141,000 miles A long list of upgrades since 2012. List of major upgrades via .pdf attachment to an email, too long for this ad. Select Major Upgrades: Michelin XRV tires, 19,000 lb torsilatic rear suspension, all brakes and brake cylinders, anti-sway rebuilt, front A/C and furnace. rebuilt rear furnace, domestic water pump, large storage tank, hot water tank (with engine heat), new carpet, 2,000 watt power interver/charger, Dometic frig replace six years ago. Other upgrades/improvements