The 2010 Ford F-450 is available as a 4-door, 5-seat regular side. Starting at $44,720, the 2010 Ford F-450 XL 4x2 is powered by a 6.4L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2010FordF-450Lariat 4x4 , priced at $ 55,660 , is powered by a 6.4L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated