Muffler Spark Arrestor for a 175

[Cruisermar]

Looking for some advice on possible compatibility for my 175 project. It’s nearing completion but I’m running into problems finding a muffler /spark arrestor that will fit. The only FMF I’ve seen so far for either 1.25” or 1.50”. The OD of my pipe measures 1 3/8 and I’m not seeing anything that looks like it would work. Any other 175 guys out there that could let me know what worked for them? Any other brands I should be looking for other than FMF and Suppertrapp that stand a chance of fitting a weird old bike like this?
Thanks

[gregg_floren]

There was a used stock one on eBay a couple of days ago. Might still be there.

[viclioce]

Greg. NOPE. It’s gone! And I know who bought it! Victor