[walfreyydo]

Get a borescope and check your bores. If they look good you can probably rebuild. Compression and/or leakdown test would be useful to understand condition of rings/valve seats/seals.

If it were me, I would pull the motor and rebuild it on a stand. You will want to replace all seals while you are at it and its much harder to access them with the engine in the car (lower/upper balance housing seals, rear main for instance)

Used NA engines are pretty cheap as well, so if your current engine has scratched bores, you may want to find used engine with good bores. Sending the engine out to get the bores done (by a shop that can do alusil) will be expensive as it requires special equipment or sleeves to fix.