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Old 01-13-2014, 11:33 AM   #1
Senior Member
Join Date: Jul 2013
Posts: 149
Default Weird engine number: RF4504

Maybe it's just newbie ignorance here, but I just brought home this engine that was in a friend of mine's AA truck. What's up with the serial number? Shouldn't it be AA-something? It doesn't look as though the pad has been machined.
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