Somewhat as a follow-up to my earlier thread:

I purchased an SMP S847 socket.  I tested it out in my 240Z, and it seems to fit just fine.

Thanks Steve!  I'll add that to my list of parts.

4 hours ago, S30Driver said:

Thanks Steve!  I'll add that to my list of parts.

Yeah, I put some more on order from Amazon after I confirmed the fit. 

Looking into it more, I looked on Rockauto for the fitment of the S847 and looked at the socket part numbers for those cars. It looks like there are some alternative part numbers for the 1156 and 1157 style sockets.