I bought my first Holley carbs, Hooker Headers, Earl's fittings, and NOS N2O kits back in the day when they were all seperate companies. Geez, let's go in the waaaaaaay back machine: first Holley carb and Hooker headers were for my 63 Falcon, which was around 1985. Earl's fittings about the same time. NOS kit was for my 1987 Z-24 Cavalier, which woulda been July, 1987.