These engines have steel cylinder liners,
unless you overheated the crap out of it,
it's a head gasket and you are on your way.
Top end set from most autoparts should be
less than $100, and a few tools and a book
you can do this.
Also if you don't know what you are doing,
and a mechanic knows it, it's ride time for
you, sorry to say, but I would be taking the
wife's car someplace else too.
Get the Trucklet home, and save it's life,
it won't take long, and less than $200 in
tools and parts, a far cry from $3000-4000

Ohh, and I have 275,000 miles on my engine,
rebuilt at 240,000 they last longer than your
has miles on it, you got lots of good miles left
Wild