o2 sensor?
 

Is there a part number for 02 sensors? And, what are the prices for them? how many does a 95' z28 have with single cat?

The number is ACDelco Part # PT368. I'm not positive though so someone please correct me if i'm wrong.

There's two part numbers. Do a search for"O2" and you find the AC/Delco # as well as the GM#

I just bought an after cat one which was
AC Delco AFS97
GM 25312196

the before cat one is, I THINK (verify with search)
AC Delco AFS75
GM 25312184

I used the same search to get numbers for my order

how many are there? I am about to sea foam...and its never been done before, so i can only guess that they will need to be replaced...how many should i get?

Usually you only have to replace the o2 sensors before the cat due to gunk from the engine. There should only be 2 on a 95 with one cat. Couldn't hurt to replace both. How many miles are on the car?

101,200...i dont know when they were replaced last, not since i got the car at 96,000..i cleaned out the TB a few weeks ago and it was pretty bad with carbon...its a single cat..where are the o2s? i know one is on the driver side headers...right?

Go to link in Shoebox's sig for parts. You'll be able to look up a schematic that gives you diagram of part location in its system and part #.