I picked up one of these as well. Though I'm sure my Ontario 1991 example is quite a bit rustier underneath than your west coast car.
http://ecomodder.com/forum/showthrea...geo-12660.html
Haven't done anything with mine yet aside from pick up a few parts (got the lowest numerical final drive from a SOHC Swift 1.3 - the convertibles have the worst gearing for highway fuel economy).
Mine's parked indoors now, so at least it's not getting much/any worse. Too many projects! I'll get around to it in a year or five.
Welcome to the forum.