There are 3 different 986 clusters.
The Mk1 cluster on earlier models like yours can only be replaced with another Mk1 cluster, though you can upgrade to the 996 five gauge cluster.
The later models came with either the Mk2 cluster (Chuck's first picture) or the Mk3 cluster with the dot matrix display if the car came from the factory with the OBC option (Chuck's second picture).
The Mk2 and Mk3 clusters are interchangeable with each other, but neither is compatible with the earlier cars with the Mk1 cluster. All 3 have 996 Carrera five gauge cluster counterparts that can be swapped in. Any cluster change will require programming to transfer over your mileage and VIN.
Yours is fixable, though.
