This is the serial # listed on my tag, 4991018YK-56677, but from what I read and research it doesn't make sense to how is should read. It should start with F10 and go from there. I would like to know what size of motor is this? Is it a 272 or 292? How do I tell
Frame rail # for mine is on the top of right hand frame rail just in front of fire wall below battery. I think special ordered truck info is put in the DSO space on your Data plate just after the RPM info.
Look at the data plate posted by Jones, bottom row last space DSO Domestic special order. Our resident guru Numbersdummy Bill says the decoding (of the DSO #) information is no longer available. But the DSO # is where ford factory posted special order info.
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