What z-bar has an 8 inch tube length?

I found an unknown z-bar that looks just like a 67-up small block a-body one but is 1 inch longer. I can post a pic if needed but it looks just like an a-body that has a 7 inch tube length. Anyone know? Thanks in advance.

http://www.ebay.com/itm/Mopar-Z-Bar-/151807267401?hash=item23586b1249:g:3OAAAOSwjVVVxgQ~&vxp=mtr

Looks just like the one pictured in this old auction...

Slant 6 a-body

Thank you!