J Heads?

OldmanRick said
......I thought a 71' 360's which were 2bbl's were "J"s with 1.88's and all 71' 340's were "J"s with 2.02's. So that's where i'm at, let the discussion continue. :D

And "X"s, 68-70 were all 2.02's...........That's my story and i'm stickin' to it. :D