Methods (ranked roughly from least to most damaging):
1. Interior Release (if it works): Some '63 Novas might have a trunk release lever inside the cabin, often located near the bottom of the dashboard or under the glove compartment. Check thoroughly. This is the ideal non-damaging solution.
2. Through the rear seat (if accessible): Some models may allow access to the trunk latch mechanism by removing or folding down the rear seat. This is the most preferable method if feasible, as it minimizes damage.
3. Using a slim jim/lock pick set: A slim jim is a specialized tool that can manipulate the trunk latch mechanism from the keyhole. This requires skill and practice; improper use can cause damage. A lock pick set offers a more precise approach but also requires expertise. This carries a high risk of damaging the lock mechanism if not done correctly.
4. Drilling the lock: This is a destructive method. You'll need a drill and appropriate drill bit size to carefully drill out the lock cylinder. This destroys the lock, making it necessary to replace it.
5. Breaking the taillight or accessing the mechanism through the tail panel: This is a destructive method. You could remove the taillight assembly and try to manipulate the latch mechanism from there, or you could even cut a small hole in the tail panel to reach the mechanism. This option causes significant damage.
Important Considerations:
* Damage: All methods except the interior release carry a risk of damage to the car's paint, bodywork, or locking mechanisms.
* Legality: Ensure you have the legal right to access the vehicle before attempting any of these methods. Unauthorized entry can have legal consequences.
* Safety: Be careful when working around the car. Avoid sharp objects and be aware of potential hazards.
Recommendation: If you don't have the keys and lack experience with these methods, it's strongly recommended to call a qualified locksmith. They have the tools and expertise to open the trunk with minimal damage. They may also be able to make a new key if needed.