Silver Star Classic gas tank and muffler

[MZCountryRider]

I'd like to find another gas tank and muffler for my Silver Star Classic to modify a bit. Don't want to modify the nearly pristine originals on my bike.

A tank in any condition would be fine, I'd prefer it to not be in good condition actually as I'll be expanding it for extra capacity.

A stock "A2" muffler in good condition would be ideal, I only want to drill the internal baffles to make it flow a bit more freely. Or if anyone has an aftermarket muffler, I may be interested in that as well. I don't want loud and obnoxious though.