Locating the IAC

Sorry, but I am new to engines, cars and all this. I purchased a 68 Cuda months ago, charged her up, she started fine. Let her sit a few more months, charged her up, and now she stalls at idle, or won't idle. Sometimes keeping my foot on the gas keeps it running, sometimes not. I did a lot of web browsing/reading, and saw many different possibilities, but one that seemed to pop up often was maybe I had a non functional or dirty IAC. So, that being an inexpensive option I could check myself, I went looking, only I can't find anything on the web that helps me find it in my engine. Anyone have any tips?

I forgot to mention I replaced the battery, brand new as of yesterday, same problem. Blows no smoke.

452 big block , link to engine pictures should be in my sig, let's see