Could be front bushing and seal. Could be large pump housing O-ring but Check for too much fluid especially warm.
especially if it does not leak driving and running? does it leak after sitting a while?
Oil pan gasket can cause it to leak down the lower bell housing and drip at front but I'm sure you have checked and know leak is inside bell housing.

Last edited by Dodgem; 11/09/14 03:42 PM.