Still has the catalytic converter. The insides are loose and rattling around. Hand on the exhaust has plenty of presser.

My thoughts now are to:

Pull the spark plugs and do a compression check with no coolant in the system.

Reassemble so it can be running again.

Recheck test the compression.

Repair catalytic converter.

Test for overheating.

Thanks for the input everyone. Can anyone see doing some thing different/