We can hold off (for now). Of course I still looked on the internet and tried to find the part. And of course, no such luck (You think maybe the Europeans might have them?? ) Anyway, looks like we're (well, he is) going to fabricate a new part.
I'll keep you guys in a holding pattern if it doesn't work out. Also going to try a simple muffler with the 2.25" pipe and see how that works. Both parts were $130. Not too bad.
For the millionth time, Thanks to all for your suggestions, answers, help and offers for parts. Not on the homestretch yet, so stand fast..lol
Stay safe, stay well. Jimmy.