leaky tranny

I have a 93 sc2 it is leaking tranny fluid horribly. it looks like it is coming from the crack between the block and tranny. i was told that there is no tranny gasket. does anyone know what it might be. i am hoping that i dont have to buy a new tranny cover.

well i think i have found the leak. it looks to be coming from the passenger side half shaft. the seal might be bad does anyone know how long it takes to change. i know i have to pull the half shaft but i havent done that one this car yet and just wondering how long it takes some of you guys thanks