Mine had about 110000 miles. I got a rebuilt box from ashcroft[ no upgrades]. With a clutch pack delivered to Oklahoma in four days . Price around $2000 even. Then I paid a local shop to install . Including a remain engine seal for $350. I did all the inside work . Removing console etc.
I fixed the crank case breather system so the engine is not being pressurized. Then replaced the leaking front main seal. Plus new power steering box and hoses. Looks like the transmission cooling lines are not leaking. Relatively dry engine now. Hoping the rear main seal will heal its self.