Nope wont work.
The distributor you got is photo electric. It has a chopper disc in it and is designt to read light signals for an EFI computer.
Plus the shaft etc is totally different, in the 2.6L the distributor goes into the rear of the head and is driven off the camshaft.
In the 1.8L the distributor is driven off the oil pump on the front of the motor and the shaft is over twice the length.
Bob.
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Current project, 1979 KB Isuzu Ute.
Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.