Thanks guys for the posts and info … keep 'em coming. Did some more mock up this evening, still working on the pipe from the collector to the muffler. Located the muffler in it's spot between the frame outriggers and used a 3/4" piece of foam on top of the muffler as a spacer.
Then cut the tail pipe where is fits onto the muffler and hung the pipe from the fender with blue tape. Let me know what you think … maybe move the tail pipe a bit closer to the front of the car and trim of about an inch or so from the end?
Looking at using a hole in the inner fender gusset, to attach a small triangulated support a bracket that will be isolated with rubber, bolt to the frame though an existing hole, then extend out over the tailpipe where it will be welded. Hopefully will be able to fabricate that within the next few days.
Here are some photos …
Muffler 'in place' with a 3/4" foam spacer
On the ground (well almost)
Muffler and pipes will be flat black when finished
Slightly different view