I do have the core support off of the 88.
Well i decided to just take the whole down pipe off and wow does that turbo sing better. Okay back to the project, it made the noise a couple time but faintly. So I got back from getting some diesel and decided to stick it back on and make it nice and tight and ensured the bracket was tight, made no noise. Went about .1 down the road and i heard it again. Pulled over and saw that the down pipe came loose again. I just put it on tight again and also temporarily put a piece of wire to make sure it stays away from the tranny. We will see, but it looks like that what might be the problem.