Yes, I do have a brand new 36 tooth sprocket I would sell. I bought it thinking I wanted to go a little faster, then decided it probably wasn't a good idea for an old retired person.
It has the two hole patterns for a kit adaptor or a disc brake hub. Also a hole pattern I put in for looks and a Metallic paint job.
Probably take $20 for it. That would include the shipping. If you are interested I will get your address.