Ford Repair: Spark Plugs, vin number, exact size

Question
I am trying to buy spark plugs over the internet and i don't know where to find the exact size of my engine. I know it is a 5.0 302 but the site asks me if it is a E, D, or T. Where would I find this?        Thanks

Answer
Brandon-

  That usually refers to the engine code in your VIN number.  The engine code is almost always the 8th digit in the VIN.  Sometimes the site means something totally different.  It all depends on the site.  I'd email them and ask before buying anything.  Hope this helps.

Steve