There is no doubt that there is a head gasket leak. Do that test as a double check. Sorry to hear man, but at least it's the 4 banger and not the rear bank of the V6 that's leakin. With the right tools, you should be able to get the gasket done in a few hours, maybe a day if you're doing it at home with no air/power tools.

1997 Thunderbird LX Clairion HU, sub and amp In the works: true duals, headers, cobra MAF In the works: Mustang with a big block