I am looking for spots to pick up and return water (for my heater core) from one of the housings.  I noticed a plug on the "front" housing across from the plugs so I was wondering if that would be a good spot to pull or return water from? 

 

The normal heater core feed on my "rear" housing (under the oil filter) appears to be unusable for this purpose due to being filled with JB weld, etc.; so I don't think I can take water from there. 

 

Thanks for your comments.

 

Doug