I have an 87 5kcstq sedan with 180k original exhaust, it's stainless. and in excellent condition (right Ned?) I have an 88 5k cstq wagon with a non stainless exhaust 56k. I was under the impression that the Q's all had stainless, but the non Q's didn't (but then again who cares?). Can anyone clear this up for me? Dave Toppin