Hi my dad's truck recently started leaking transmission fluid and we're having trouble identifying what needs to be replaced, here is a picture of where it's leaking from, any help will be appreciated.

2005 Ford F-150
5.4L engine
fluid is leaking from the rear end of the transmission.
let me know if any more pictures or info are needed.








the black stuff is some instant weld fluid

 

Looks like the transmission tail stock.

 

tailshaft housing.