This is part # 550100 from Compucar designed to work on vehicles with holley base. I bought this kit for my dad a while back and we never used it. Never been opened. I have pic if you'd like to see. Goes for $449 Asking $400 shipped

If you are hungry for more power, the our plate systems may be just what you need. These systems can be used on stock engines up to 175HP and up to 275HP on slightly modified engines with forged pistons. Being adjustable gives you the ability to change horsepower levels to compensate for different track conditions. Systems include jetting from 50, 125, 175, 225 and 275HP.

Each kit is supplied with a empty 10LB aluminum bottle, 17' braided steel line, quick release stainless steel bottle brackets, precision drilled nitrous injector plate, solenoids, wiring kit, filter, and lifetime warranty.