What engine is it for? IF you ant to upgrade your Alternator, I know that Mean Green Makes a 170 amp ALternator for the 2.6 and most likely for the other Isuzu engines as well. You can look them up on a search engine.

If it is a 2.6 getting the alternator in and out of the truck is real easy. Take the smog pump out, remove all the belts, unbolt the two bolts that hold the Alternator in. Reverse that to put it back in.

Good Luck

Joel

1990 Isuzu Spacecab, SAS 95% done

'06 Nissan Sentra SE-R Spec V