Dougs headers

Looking at the pics posted by 396 Signet, The Z bar should clear the headers. If you use the bellhousing bracket sold by Brewers for the 10.5" clutch conversion the Z bar should end up in the same location as the one for the original clutch.
Won't work, the arm of the z-bar will interfere with the pipe. It's a no win situation, if you move the z-bar out, it hits the pipe, if you move it in it hits the starter mount. Only reasonable way to go is hydraulic. Of course you could use the stock bell or maybe some different manifolds or headers.