Rambin is right on
Nice list BTW.
Isuzu has been a testing (sometimes dumping) grounds for GM/Delphi systems for many years. A cheap and easy way for GM to put systems thru real world testing w/out associated them with a GM brand. You'll find many GM/delphi parts on your isuzu/honda, but the 3.2L is (was) an isuzu design. As it looks so far, the last year for the 3.2L was 2004.
G/luck
Joel