I think that since you have gone to the effort of pulling the piston out, you should do all you can to make the best engine out of what you have. You will be rewarded with and engine that starts easily and runs well.
You say the bore has light scoring, is it like any of my images above?
The first three blocks above will definately go to scrap metal.
I will use the bottom two.
The rings need to seal against the bore as it travels up and down.
Rings are available on ebay for a small amount.
I only hone the bore if I think it needs it.
You can get the cylinders rebored and a kit (exchange) would start at a cost $99.86 (depending on cylinder type)and that includes the piston assembly and rings.
