Yes, I'm sure it's possible.
No idea who or how much.
Why. A modern inline 36 is a weird idea.
Scoped squirrel rifle?
Yeah, a scoped squirrel rifle was the idea. Back when I was a teenager there used to be one made by Knight that was on display behind the counter at the Co-op, always regretted not giving it a try. Money was a lot tighter back then though.
I was wondering if it would be possible to use the existing breech plug set up or would a new, smaller one need to be made?