Hi. I'm new to 4x4's and have zero knowledge of Isuzu engines.
I recently got a 1987 hi-roof Isuzu Tropper II LS stock 4ZD1.
I use the Trooper because of its large cargo space.

Problem with it is that it overheats, especially when I'm stuck
in high-noon traffic. And there's oily residue floating in the radiator
and also inside the neck of the coolant tank.

I'm no gearhead (pardon my ignorance). A mechanic said I have
to replace the head gasket and check the radiator & water pump.

I'm curious on what particular brandnames you might want to
recommend when I get the gasket kit (or engine rebuild kit if need be).
I asked several local auto parts & suppy shops from where I'm at, and
they don't carry anymore 4ZD1 kits, be it OEM or aftermarket.
I guess I have to order overseas (US).

Much thanks.