The Edelbrock Performer Nitrous Plate System #70001 is designed to increase your power from 50-100 horsepower. This system is for use with square-bore carburetors and has silver powder coated bottle.
The Edelbrock Performer Nitrous Plate System #70002 is designed to increase your power from 50-100 horsepower. This system is for use with spread-bore (Q-Jet) carburetors and has silver powder coated bottle.
Edelbrock Performer RPM Dual-Stage Nitrous System #70003 is designed for those who want to add power in stages to soften the hit of the nitrous system. This system is for use with square-bore carburetors and has silver powder coated bottle.
Edelbrock Performer RPM Dual-Stage Nitrous System #70004 is designed for those who want to add power in stages to soften the hit of the nitrous system. This system is for use with 4500 Series carburetors and has silver powder coated bottle.
Edelbrock Performer RPM Dual-Stage Upgrade Kit #70005 includes everything needed to upgrade from a Performer RPM Single-Stage nitrous system to a Performer RPM Dual-Stage system.