How about we start a list of which cars roller cams for the 2.3 can be found in?
We all know that the early 90s rangers have them, but I found mine in a 91 Mustang. I don't know if they all had it for that year, but the one I pulled it from had the 8-plug cylinder head and solid state ignition, easy enough to identify without removing the valve cover.
That car had been at the yard for over a year but I never thought to pull the valve cover and check it. I fell upon the cam by surprise when I popped off the cover to see if the motor had 12-point head bolts.