rebuild or re-use?

k so i got a 94 wr 250 and someone "borrowed" my coolant. so basically i destroyed my bike but when i tore it apart i found everything wasnt so bad. the piston melted a bit near the exhaust port and there is a small scratch on the cylinder i can feel it with my finger nail but it doesnt catch my nail.. basically i dont know if i should just try another piston and ring or what i dont even know if i can hone these types of cylinders... any advice?

i dont know if it actually ever "overheated" i had kinda been playin with it all day tuning and what not and fire-in it a few minutes at a time but never actually warmed it up.. so i took off down the street and id guess about 3 miles or so it started runnin like a 500, just screamin, or somethin then suddenly slowed down i downshifted and it shut off. i tried to start it and it seemed locked up (not tight). even then the cylinder was barely warm, thats when i decided to check my coolant :bang: so i pushed it home and when i took it apart i found the rings melted by the exhaust port but that was it other than the little scratch right in that area.