go to any reputable engine rebuild shop and get one over the counter.
BIG TIME TIP: always smear the freeze plug hole with just a trace of RTV before you use a socket wrench socket to tap the freeze plug in place. It will seal perfect and never leak in the future.
Also: ALWAYS get the bronze freeze plugs. run away from 'coated' galvanized cheapo plugs. on freeze plugs...ALWAYS buy the better ones. also, always change your antifreeze when it's time...best way to avoid corroded freeze plugs.
Newly Painted! Emerald Green '96 XJ 4x4 4.0 HO 5-spd
3" Lift + 31" Tires / D35 TracLok / NP231
Drilled out Stock Airbox / Gauge Cluster Upgrade
Magnaflow Muffler / High-flo Cat / MSD Coil