Hi, I have a 2003 Ford Explorer 4.6l V8. It requires a blue slip.The guy who did the inspection failed it because he couldn't find the Engine number ! I'm pretty sure it exists as I believe it is the original engine.Can someone advise where on the block the number can be found.I have enquired with Ford head office, they got back to me only saying it was on the engine block,transmission,frame and transfer case.Still waiting to hear back from them as to where on the engine block.If I can find it on the transmission or frame can that be enough proof that it is the correct car for a blue slip.I also know that the last 8 digits of the VIN is the engine number.Look forward to your replies... Kevin,