Looking under my Supra this weekend, and noticed alot of rust on the rear diff, and the lower suspension parts of the rear, as well as a few bolts though out the length of the car undernearth. I've seen a few underside pictures of Supra's my same year with the exact same problem. My question is this: What can I do about it? Is there a process of undercoating, and removal of this rust? Is it something I could do myself, or should I take it to be done by a pro? I've always owned German cars, and I have never had a problem of undercarriage rust, but this concerns me(maybe more then it should). Thanks for any help!