My build sheets are pretty beat up on the bottom, but it's interesting looking at them. I realized, I never looked at them closely before, kind of cool..
My Model number is either 2HM27 or ZHM27, I can't make out the first digit, but I am assuming the M27 is the Code your talking about? That makes mine a Sunbird Sport Coupe?
Anyways, mine also has the: Y94 SUNBIRD DELET
I checked my dash pad, as someone mentioned, and only emblem it has is "Sunbird" on the far right of the dash..
I checked all my RPO codes against the list here:
http://monza.homestead.com/files/RPOcodes.htm
And the Y94 is missing and one other I have on mine:
62B TAN CLOTH
62B Also shows up in the "TRIM" box next to "MODEL"
Interesting stuff... Mine looks to have been built at the Lordstown 16 Plant, although there could be a digit missing before the 1 in 16, and charged to Ricky Smith Pontiac in Weymouth, MA...