The 2020 RAM ProMaster 3500 is available as a 3-door, 2-seat cargo van. Starting at $37,945, the 2020 RAM ProMaster 3500 Long Wheelbase 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 2020 RAM ProMaster 3500 Cargo, priced at $36,395, is powered by a 3.6L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated