drain

Hey guys, Need some information regarding my setup here. I'm running a 600W class D amp powering 2x 12" subs and another 400W Fosgate 4-ch amp to power my components. A few nights ago i was at a parking lot waiting for someone, so I had my sound system on. I let it run for about 30 minutes...

I want to put in magnetic drain plugs for both the engine and tranny. I know the engine is a M13.4X1.33 but i can't seem to find anywhere what size the drain plug is for the tranny. I know spoon makes a set of both but $50 is just high. Thanks for any imput.