Ecm # Needed For '82

I Had To Replace My Ecm While On A Trip, Could Only Get A Carquest Replacement At The Time. I Didnt Write Down The Ecm # Of Orig-it Runs But The "check Engine" Lite Stay's On And Was Told By My Electronic Man That It Needs The Correct Ecm-but I Need A #-can Anyone Help, Can This Ecm Be Used? Any Tricks I Dont Know?thanks

The oem PCM # is 1225550 the list is $167.35