So I finally got around to draining and filling my Getrag. Firstly, if you're in Chicago and need a place to wrench check out Gearhead Workspace near IIT/Sox Field. They have lifts!
This is me role-playing as the Exxon Valdez...
Finally I got the two plugs out and realized they are different sizes. The smaller one is the fill plug, M16x1.5x12mm
, and the larger one is the drain plug, M18x1.5x12mm
Here you can see my two choices when it comes to replacements. The OEM style or a beefier aftermarket one. This whole investigation was caused by the allen head stripping on the stock plug, so I went with the beefy one...
Here you can see what I mean. The new plugs take a 3/4" wrench and are much more substantial than the old ones. Note: you'll need something like a crows foot wrench to torque the drain plug with these replacements, or maybe a u-joint if you dare.