Hilltopper sprocket

[capguncowboy]

I need a rear sprocket for my Hilltopper. Anyone have one or know of a good replacement? I'd prefer it to be exact

 

[capguncowboy]

bump

 

[piglet]

Mini bike sprocket. 80 tooth 35 chain. Universal 3 bolt | eBay
In the description it says it should fit a heathkit. Hope the link works.