I just finished a bunch of searches to see what I'm dealing with.
It doesn't look good.

I have coolant leaking out of the rear of the motor somewhere.
From what the searches tell me it's either a freeze plug, knock sensor, or the
hose that connects to the heads?

I am about to go out and try to find out for sure what it is.
My question is, any advice and or troubleshooting tips to give me for my search?

Anything else I should check while I'm under there?

thanks for your help guys.

 

that was going to be my guess.. no real tips, do they make a coolant leak test or w/e?

 

If the leak is coming from the back, it is most likely the steam pipe o-ring seals on the back of the heads.

 

I 3rd that