And in other news...

The engine in my truck is being rebuilt. I drive a 96 4Runner with a whole
bunch of mods on it. I burned a valve at 160k, drove it another 3500 miles,
and finally tore it down this weekend. I could get away with just a valve
job, but I plan to drive this thing until it falls out from under me, so
the right thing to do is to just rebuild it.

This is what the inside of "the bad" head looks like. Note the chip missing
from the valve (top right on the leftmost cylinder), and the lack of
porcelain around the plugs in the first two cylinders.
http://midiwall.com/4Runner/pics/20061202_Rebuild_04.jpg

I should have it back in 2-3 weeks.