One stud is missing where it connects to the exhaust pipe and at least 2 studs need to be replaced with new or bolts of the right length.

Please study photo 4.

This came off a 1972 124 special 1438cc engine, but is probaly the same as other 124 models, but please check before buying as this is a no returns sale.

The last 2 photos show the part numbers stamped on the inlet manifold and the 2 before that show the numbers stamped on the type 25 cylinder head to help you check compatibility