So I am in the process of a full interior swap. I have heard that only a few small things are not compatible from pre 89 to post 89. One thing I'm looking to find out ASAP, is will the dash from an 88 turbo plug in with no problems at all into a 90 turbo body. As far as all the fuse plugs in the kick panels, and dash harness. If so then that is what is left to finish this swap.....if it doesn't go directly over with no problems at all, then I will have to start looking for a post 89 mint blue harness.