Couple of points -
There is a real disconnect with the timing belt change time frame.
All of the Isuzu engines brought into Australia in whatever vehicle, list the change period as 100,000 kilometres (62,000 miles).
This applies to 2.6, 3.2, 3.5 litre petrol engines, plus 2.8 and 3.1 litre diesel engines.
I have also had this checked in the original 3.2L Japanese manual, and it is 100,000 kilometres.
I am doing my timing belt change next week, at approx 120,000 kms, as it felt like a comfortable compromise.
With regards to that Ebay supplier - all of the parts have arrived and look good. Until I strip down the engine, I won't know 100% if they fit. I will report on that when completed.
What I do know, is that they bent over backwards to help me. I asked them a question through ebay, to see if they could get me other engine parts. They asked for a list, and 24 hrs later I had a quote for all the items I asked for, except 1 they couldn't get quickly. I don't know how their prices compared to USA prices, but they were only about 60 - 70% of what I would have had to pay here. Most of the extra parts I asked for are genuine Isuzu.
Prior to shipping, they sent me an invoice that was less than their quote, because some of the parts they had found in a kit rather than individual parts.
They also asked for a measly extra $10 for freight over what just the timing belt kit would have cost. Freight from USA to Aust is expensive.
If all these parts fit correctly, they will become my first place for shopping for parts in USA.
Regards
PK