The 2013 RAM 3500 is available as a 2-door, 3-seat regular side. Starting at $30,105, the 2013 RAM 3500 ST 4x2 Regular Cab is powered by a 5.7L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2013RAM3500Laramie Longhorn Edition 4x4 Mega Cab , priced at $ 53,990 , is powered by a 5.7L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated