Rear diff mounting bracket

[jeff turbo]

Im guessing its leaking from where the down pipe meets the manifold as the manifolds wasnt removed when taking the engine out.

They may have used the old gasket but it would have needed replacing, are the bolts still on the joint or has one snapped off? It maybe not tightened up enough with luck as other parts were loose as you mentioned .
It's not initials TF is it who did the job?