I have a left trailing arm off a 1990 indy 500 I believe it is the same one. But, it has been welded once before just past the spindle. I still rode hard with it and didnt seem to have anymore trouble but I bought a new one anyway. New ones can be purchased from "Dennis Kirk" for only $65. But if your interested in mine I could try to get you a picture of it and you could have it for next to nothing but shipping of course.