Alright i got 3 questions:

first my battery died this morning and right before it did, i had the door open and i kept hearing this clicking noise like crazy, any ideas?

second, i found this plastic piece under my TPS on top of the intake this morning. what is it?





third, my friend is giving my a free optima battery. what size is the best to use and is 75/35DT or 34/78DT ok?

 

Clicking noise: Dunno. Maybe a relay trying to do it's thing with less than the required power available.

The plastic piece: Do you have aftermarket, adjustable shocks? If so, that may be the cap for the top of the shock. Just a guess. I don't recognize it otherwise. Maybe someone else will.

The battery: I think your best bet is a 35 series battery. If you were buying one I would recommend an Interstate MTP-35, but since the Optima is free, go for it.