[Lynn Eades]

I only had one original side, so I put the engine in, assembled the flange to the manifold, put the ball end of the pipe into the exhaust elbow, put the pipe in place and tacked it all together. then pulled it out and fabricated a jig from that.
It requires that the engine, gearbox assembly is properly in place and all tightened down.
Kevin. I appreciated your offer of replacement, however the cost of postage to you and back was way more than what they cost to buy.

On the "fit' of the ball end of the pipe in the elbow. I don't think it was ever designed to be airtight. free moving without being sloppy works fine.
Any rotational movement of the engine on the front mounts would result in more of an in and out movement at the pipes than anything else.

Selecting the correct Ford mounts would be important, the ones in the carrier being from a truck rather than the softer car ones or the Jeep one. Micheal R has previously posted details.