The dealer says there are 2 possible drain plugs.
metric and SAE .
So I ordered both.
your dealer parts guy is incompetent.
PLUG. Engine Oil Pan Drain.
PLUG,OIL PAN DRN(M12X1.75X25)(W/SEAL)(EXC MAGNET). Required: 01
For: B 4.3W(L99) (1996-1996) (1996 - 1996).
Ive always heard good words about the fumoto's but would worry it'd get knocked off on a lowered car.
at least with the drain valves they made 15 yrs ago.
evil T-47 seatbelt bolts and cutdown ZQ8 bumpstops, Kore3 front brakes, TB bypass, Dynotech DS, F-body EGR, Meziere WP, Comp Cams 1.6RR/CM springs, trans by Moi Industries, Yank 3600, Earls trans cooler/rad cooler delete/Derale t-stat, RAISS, SLP headers, SLP injectors, pypes X-pipe/magnaflows, Borgeson shaft, Hotchkis springs, PPM front stuff, Metco rear arms, Clear Image DS loop/trans crossmember, 3.73s, eaton posi, Hypertech for smog
BH tuned PCM