Thanks for the link Tim. Universal hangers don't fit well w/ our 69-73 Chrysler models. The exhaust from Waldrons fits pretty well. Universal hangers were found everywhere w/ this hacked exhaust system I removed. There are some very tight clearances over the rear axle and rear bumper. Just...
Here are the new replacement parts. Shown are the left and right 1 piece manifold to muffler pipes. Left side was spot on. the right had to be massaged a little. It appears the correct exhaust hangers need are the same as my Hurst 300. Universal hangers were employed currently. see last 4 photos
Next to do was address the leak prone patched up exhaust. The cure was to install a dual exhaust kit from Waldron w/ Imperial mufflers. As you can see the present exhaust Had been patched up many times
Murry B Park in Tiffin Ohio, here is the web site link. @cbodies.com. Family run operation, be patient, Murry is a good guy. Has absolutely the largest salvage yard stash of C bodies.
Here is my take on how to rebuild w/ success. As @dematt said bore the cylinders .030 over. That will insure good ring seal also it will remove the ridge at the top of the cyl. bores eliminating possible piston ring breakage. As for your crankshaft, if measuring w/ a micrometer allows, micro...