Holley Z style street dominator for small block

A little FYI, "Z" style refers to the passage in the rear that connects #5 and #7 to help negate the firing pulses on those two cylinders. Courtesy of Zora Arkus Duntov hisself.....or so I have heard. lol Supposed to be a real good piece. Not only all that, but Chuck is a stand up guy to work with. Ask me how I know. :)