Canvas Cover source?

[downwind]

I have a 1985 that needs a canvas cover (not a winter cover, one to keep the sun/rain off while under way).

Does anyone know where I can order one online or buy a used one? I've looked but no hits yet.

I can pay a local canvas shop to make one but I'd rather find someone who knows the boat and is likely to get it to me quicker than a custom/from-scratch kinda project.

Thanks
PS, also looking for new drivers seat and a bench or back to back bench seat.