The new ones are wet. I think if you check around, if I'm not mistaken you can put ATF in that case. I read that all your missing is the fill and drain plugs, the internals are the same, Don GruBee I think is the one that developed that gearbox, I have watched the evolution on the net. that engine is awesome but I don't like the looks. I'm waiting for a remake of the Flying Merkel engine. Have fun Dave