The 2020 RAM 3500 is available as a 2-door, 3-seat regular side. Starting at $35,345, the 2020 RAM 3500 Tradesman 4x2 Regular Cab is powered by a 6.4LL , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2020RAM3500Limited 4x4 Mega Cab , priced at $ 67,500 , is powered by a 6.4LL , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated