Ok, searched, thanks for all the great info Rick.
There were no clutches available in the US, in a bit of a hurry since I want the truck on the road in a day or two, gave 4wheel parts (very helpful) they had one sitting on the shelf, had them overnight just the disk to me since I figured that would tide me over till I had time to get all the parts.
I pulled the trany after work today, poked my head in the bellhousing and let out a few expletives.
The pressure plate in there is very clearly marked 1HD-T H151 (this could be misinformation since it is written in sharpie marker)
I ordered an HZ disk so I am thinking I am screwed.
I measured the contact surface of the flywheel, just under 12", converts over to about 300mm, like the HD is supposed to have.
Now there are two things that are really confusing me:
The first is that everything looks brand new, what gives? Why is it slipping? Clutch disk still seems quite thick, still plenty of travel on the PP.
Second, the 300mm clutch disk in there is marked TEQ and AISIN, but is 300mm and 21 splines. I thought this disk did not exist?
Any advice?
Is that isuzu disk a common US part?
I am off to search for the part number.