Replacing the MAP sensor in a 1996 Honda Civic DX?

What's up,
Well I figured out how to take the stupid kick panel off and was able to get a code via "blinking lights". I got a code 5 error showing that my MAP sensor wasn't working properly so i decided to fix it myself. One problem though... I can't find it on my DX engine! I've seen many many pictures of the MAP sensor on B16A's but none on my engine.
Another problem might be that I still have my stock air box... could this be blocking me from seeing it? I've been told it's on the passenger side of my car and is actually attached to the air box, but I haven't been able to find it yet.
Lastly, when I finally do find it, is it hard to replace? It's just plug and play with the two screws that hold it on right? Also where could I buy a new one? I've been told that honda doesn't sell MAP sensors seperately... you have to buy the whole throttle body! I've searched the internet for them, but I can only find used ones on ebay.
Alright thanks for taking the time to read this, and thanks again if you can provide any info!
jake