If I remember correctly, your car has a small block Chevy motor, carbureted.

The Holley or Carter high performance street pumps will work fine. Your local auto supply should have them. You can use the Carter M6900 or the Holley 12-237-13.

If you go electric, use a Holley "Red" pump 12-801-1. Mount it near the tank, as low as you can in the chassis.