Greetings,
Little background, this winter I really put the tracker through ringer, plowing unruly amounts of snow.  At one point, I let my neighbor do the plowing while I was at work, and apparently the upper radiator hose blew and the tracker overheated.  Since it was running really poor, rough idle, and no power.

I started the run through this weekend.  First thing I noticed, there was engine oil in my air intake tube, I would assume blow back from the pcv valve, not sure where else it would come from.

Is this something that would occur with the overheating?

Fearing a blown head gasket or worse warped head.  I did a compression test, resulting in 180, 170, 170, 170 (approximates - my gauge doesn't have the finer tick marks)  The test was done cold, because by the time I removed the literally melted plug wires from the valve cover it had cooled down. So I believe the numbers are within normal ranges.

The plugs were really fouled too, dark black in color.

So new plugs and wires, and it seems to be running well again.  Is there anything in the above info that waves a red flag for you more experienced folks?

Other then that's a really good compression, nope. 

Yeah, cold and 165k motor.  I was very pleased with the test results...

Shoot I tested mine recently and got a consistent 150 and thought that was good.
I guess it depends on just how long it ran overheated. If it was ran for an hour overheating then thats bad. If you caught it early then no big deal, I would think.

The plug colour doesn't sound good, what sort of black? did it look oily or over fuelled?

I would say over fueled, based on smell, plus exhaust smelled rich too.  At one point my air intake came loose, so that may have started the fouling of the plugs.  Once I drive it around a little, I'll pull the plugs and see how they look.

Alright, so new plugs, pcv, wires and the tracker was running great.  However on my test run, it overheated again, I wasn't far from home, so I was able to get back before actually "pinning" the temp gauge.  When I shut down the truck something blew and giant plumes of steam flew out.  The next day I filled the radiator with water, and started the tracker, engine sounds good, but it's leaking like a sieve. 

From what I can see, it leaking from under the intake manifold, where I'm assuming the heater lines connect.  My question is it looks like the rubber hoses connect to a metal tube.  What's the likely hood that the metal tube is rotted and leaking, and is this a replaceable part, I don't see any mention to it in Haynes manual.

and for working in this area, is it worth pulling the intake manifold, or should I just be looking at removing the starter to gain access?

I would check for compression in coolant while running. it will buiel pressure really fast and will blow out coolant in spurts while running if you have bad head or gasket. also replace the thermostat if it got hot it is probably bad.