An acquaintance here in NZ has somehow found a high-roof T3 he
thought about wrecking, but it turns out to be too good and he is now
leaning toward putting it back on the road. The tailgate is rusty. I
suspect high-roofs were never sold in the US. If anyone on the list
has a good one, what price?

He also wants some captain's seats, grills and probably other parts.

My own experience is that almost nobody in the US is willing to sell
to anyone overseas.