ECM for 2001 150 hp HPDI Z150TXRZ

[pmat]

Can anyone tell me why there are so many different part numbers listed for the ECM. I see 5 different listings for my 2001 Z150TXRZ. I am hoping to purchase a used unit and am wondering how I can tell if it will work. Will an ECM from a 2002 200hp HPDI work?

[boats.net]

The five listed are
68F-8591A-10-00 ENGINE CONTROL UNIT ASSY UR Z200 L
68F-8591A-01-00 ENGINE CONTROL UNIT ASSY UR Z200,LZ200 X
68J-8591A-00-00 ENGINE CONTROL UNIT ASSY UR Z150 L
68L-8591A-00-00 ENGINE CONTROL UNIT ASSY UR Z175
68H-8591A-00-00 ENGINE CONTROL UNIT ASSY UR Z150,LZ150 X
It requires a different one for each model.