Do the tranny mount as well as check the shifter bushings.
Are you sure the valve covers aren't leaking on the manifolds giving you the smell? (this is more common than the exhaust leak)
I'd give the oil level sensor a glance as well for leaking by the o-ring.
Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.