Yeah, there's a page in the manual that pictures the "optional child seat anchors avaliable from you Isuzu dealer." It's a simple metal clip that bolts to the floor, as you say, Etl. So the Anchor issue is solved....
I just popped by a guys house to check his Ironman rear belts, and they don't even look close to what I have. So, I think the problem is that I don't have the proper rear belts at all.
kpaske...good call on the extenders. I'll look into those.
Bim