[hkmp5]

Thanks Rick Lake.
Was adv. as a top oiler.
The casting #'s just made me wonder and some have said
that screw in plugs were all S/O.
This forum has been a great help (thanks to all responders)
I want to stay with original FE motor in my cobra.
Have a T/O now but this is a nicer block.
Not too many around from what I can find.
Thanks,Mike