I installed these bushings: [ http://alamoautosportsstore.rpmware.com/whiteline/whiteline_synthetic_elastomer_bushings/w92446/i-444674.aspx ] on a customer's 1995 TT, and they worked great. They are quieter than any other aftermarket bushing I've tried, and I don't recall having a huge gap between the subframe and the rail. I work on the car regularly, and I would definitely notice the subframe dropping 10 mm when I set the Z down on jack stands. He has raced it two seasons with no suspension issues. I'll double check the next time I work on his Z, but if he had 10mm of slop in his subframe bushings, we would have noticed a problem by now.
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