The 2014 RAM ProMaster 3500 is available as a 3-door, 2-seat cargo van. Starting at $35,350, the 2014 RAM ProMaster 3500 Cargo is powered by a 3.6L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2014RAMProMaster 3500Extended Cargo , priced at $ 36,150 , is powered by a 3.6L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated