Mobsteel 2012 Ford F-650 with 7.2L Caterpillar Straight-Six This is Mobsteel’s 2012 Ford F-650 from SEMA 2011. The factory engine has been replaced by a 7.2L Catepillar C7 turbocharged I6 with a Allison six-speed transmission. If the C7 in this truck is the t...