Does anyone know for sure if there is a small frost plug in the head, at the back, passenger side, just behind the bottom bolt on the #6 exhaust manifold.

It is half the size of the rest of the ones on the head.

It was leaking and I put a screw in it to get me by for a few days until I can get the parts...

Thanks...

 

Yes, and there is one on the very back which can be used as part of the heater circuit (gives better cooling to no 6)

do a search on here for info