Am I going blind, [totally possible!], or are plugs #1 and 6 long reach plugs, and the other 4 are short??

If so, WTF are you doing??
Look at the lower portion of those 2 plugs.. The threads are black...[Like they've been sticking into the combustion chamber.] They also look to be totally different tip projections.
Oh ya. Buy a camera. If you are going to mess w/ these cars, U R going to need 1!

Also, looks like those 2 plugs have been in the engine for a considerably longer time than the other 4...