the best things i can think of for you to do off the top of my head are:
-chromoly k member and a arms like i said earlier
-if you havent done it already the crossmember, and dogbone
-move the battery to the trunk
-you could ditch the front seats for something lighter and with better support
i havent really done much for weight reduction besides the stuff in the trunk, start a thread, im sure someone could give you a bunch of ideas.