The 2013 RAM 2500 is available as a 2-door, 3-seat regular side. Starting at $29,420, the 2013 RAM 2500 Tradesman 4x2 Regular Cab HD is powered by a 5.7L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2013RAM2500Laramie Longhorn Edition 4x4 Mega Cab HD , priced at $ 52,675 , is powered by a 5.7L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated