I think those Dynamax would be good enough, cheap enough, and yes I can fab the hangers to hold up the rear of the mufflers and the hangers for the tips! I am just about finished fabbing and welding the rear lower qtr. patches and other smaller spots on this odd ball 76 runner!. These F bodies lend themselves pretty well to making these "token" hotrod changes. The 360 F body ( along with the Lil Red Express) was the fastest production US car back then would you believe! Faster than the Corvette. This runner is just a smogger 318!!!! lol But it will look and sound cool! lol aagain!
A sheet of 18 ga mild steel plate costs me $60 other day. That should be fine for the loop to hold up the muffler, and I will find something to hold the tips.