At this point, you'd be better off taking the time to completely part the car out.

In CA with a salvage title, you'd be lucky to get $3500 assuming your motor is in excellent condition with reasonable mileage.

As a rule.."salvage" titles absolutely demoilsh the resale value on any car. I wouldn't have bought the car in the first place, frankly. h:

Lastly, aftermarket mods are not an investment in the car's value.
The sooner you learn this, the better off you'll be.