Well, after going through boxes of gaskets and finally putting them all together into one box, I guess that's one I don't have! I swear, I have every other gasket though!!!
Sorry I wasn't able to help you out on this one. At this point, find the Toyota FIPG and get that rtv, it really does work well for that housing. A little goes a long way with that FIPG stuff too, just create a small bead all the way around, let it skin for a few minutes (usually about 5 minutes is what I give it) then put it together and bolt it down lightly. Torque it down to spec in about an hour and you should never have a leak from it!