Here is another question I have about the choice of heads: Is there any year head that had its intake ports on one side and exhaust on the other?

If so what years was it produced?

Are they worth more than other production heads?

Thanks again for the help. Im sure ill have more q's by the end of the night.

Well, me... it's nice talking to myself
A credit to dementia
Some day you too will know my pain
And smile its blacktooth grin
If the war inside my head