[Rowdy Rat]

Joe,

Thanks for the confirmation. Yes, what you show is correct - part number 838 is casting number 842; part number 072 is casting number 074. Again, these part numbers are from the mid 1970s and may have been superceded, but they are correct at that point in time.

Now, anyone know something about the other two? I'm beginning to think that the 387 that shows as a casting number may actually be a part number for the 392 head - just a theory at this point. Can't find any reference to the 401 head. The search continues...

Regards,

Stan