Do a search for 'air pump delete' there are like 3 good threads on this topic. I used the jeep drain plug from NAPA referneced in one of the threads. Good Luck.
95 Impala SS, 79K, 304SS GEN II TRI-Y, 304SS CIA exhaust, tubular xmember, throttle body bypass, 160 t-stat, stealth bolts, LT4 KM, PCMFORLESS tune, Gary's cables, vette starter, 3.5MAF, RAISS, Racetronics, 55W 5000K DDM HIDs, s10 oil pressure sensor, AIR delete, Hotchkis springs/Bilstein shocks, lt4 composite valve covers.
Deceased: 96 Caprice 9C1