For a one time job I would probably just use a jig saw and be patient. May be easier than hauling around plasma gear, may be cheaper than a big hole saw if you have one. Just drill a 3/8 starting hole and dig in.
Andy | Longmont | TLCA#22354
-1999 UZJ100 -Black, GYDT285/75-16, Locked, WKOR sliders, TC UCAs/ Iron Man T-bars, OME866, D/T headers/Magnaflow, Columbus RTT, Drawers n'stuff.
-2001 Tacoma 2.7L Reg Cab 4x4 -Silver,my DD/trail truck, Icon/TC mid trav front, GYDT265/75-16C, Budbuilt Skids