The number that George posted is the service part number, meaning this would be the part number on the box if you went to the store and bought one over the counter. The number on your old module is the stamping number, also called the engineering number, which usually can be crossed over to the service part number. As you noted, in this case only a few of the digits are different, that's usually the case. However, sometimes the service part number can be completely different, even the base number, in this example 12A297, which indicates an ignition module. An engine block casting will usually have a stamping of ---- 6015 -- , but the replacement would be ---- 6010 -- . There is a ryhme and reason to the Ford numbering system, but there are some twists and turns to it, and in the last few years especially, numbers get assigned to a part and they don't follow their own rules for making the numbers ... makes my job a bit more "challenging" !! OK, I'm finished venting now.
cheers
Ed N.