i have had great luck with a product called Pig Putty. Actually patched up my buddys exhaust muffler on a 73 Suzuki 350?....something or other lol really turned out well at least to the point it would run. that muffler was roached out!
https://www.newpig.com/repair-putty/...SAAEgKhSvD_BwE
its been a few years and I know it wasn't called new pig putty..
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72 Luxury Lemans nicely optioned
