Hey Jeff, the mk4 jettas, (99-04) bodystyle weighs about between 3000-3300lbs depending on which model/options you get. Obviously the v6, auto, leather, power/heated everything is HEAVY, so it wouldn't be that far off your ws6.
BTW, haven't gotten the body off, my dad decided to take a 10day vacation to colorado last sunday, lol, and isn't back.
I'm down for some autox this summer in the miata, once I fix a few things! I've heard its a blast but never tried it.