OK, I forgot to note, one of the short UIM bolts has a different head where a short stud with threads comes up from the head. I can't for the life of me remember where this one was from. I don't see anything that would have gone over it. Help!

If memory serves, that goes behind the throttle body.

It goes on the end at the pcv, front. On some models like the Impala and Bonneville, part of the wiring harness to the engine is held by clip on a small plate held to that stud with a nut.

This keeps the wires safely away from the belt.

thanks Bill, that was what I was thinking. I'll look closer, but I don't think anything was attached to it. There is a long one that goes where Danthurs said.