Why not buy an oversized plug and tap the case? A 22 mm plug is about $10 and a 7/8 in plug is about $6 plus shipping. Plus the cost of a tap. Use some low pressure air blowing in the fill plug to keep the shavings from the tap out of the case.
Check here for drain plugs:

http://216.239.41.104/search?q=cach....htm+7/8"+drain+plugs&hl=en

Last edited by NATO308; 09/04/04 06:59 AM.
'94, and '00 Amigos and '00, 01 Rodeos. Rodeo springs and aftermarket 'hard top on 94. Aisin hubs OME 919's on the 2000 Amigo. 2000 and 2001 Rodeos have OME 912's and Aisin. Smoother ride with the OME 919's???