I asked my mechanic (saw you dug up many of the old posts on this issue, good work) if the coil was testable. He said that in his experience whenever you ohm out a coil, it always comes back as being ok, but is usually the culprit. The best way to test the coil is to replace it with a known good coil. Pick one up online, if not at fastlane, try
www.foreigncarpartsonline.com - I've used them many times and they are quick with shipping and competively priced. I believe the coil is somewhere around $96 + shipping. Like I said before, its well worth the investment if you plan on keeping this car for any length of time.