1972 440 exhaust manifold tabs? Also, what plugs should I run on a 60 over basically stock motor?

[WileERobby]

CHAMPION J-11Y as original OEM...
BOB RENTON

I know that Bob... see post #12... I was doing tune-ups on these cars back in the day, I know the plug specs by heart. I was making a point to the OP.

 

[RemCharger]

Ok but what about the weird Pic of the chevy lookin plug.. is it a motorhome head or is the puc wrong