I'm going insane trying to find the engine serial number so I know if I have the forged or powdered rods. I have a 2000 f550, obviously with the 7.3psd. Where is this number? I found the post on the range that the different rods are in, but what is the approximate high end of the number sequence. I see numbers that start with 18***** but I would assume this truck being a 2000(actual build date of august 1999) the number would be in the low end of the 14000s? I'm confused and frustrated. Sorry about the ramble.