Honestly no. Both have MM coil overs front and rear, and I wanted the most solid mounting I could get out back. To me it would provide the same benefits in the rear that the bearing in the MM C/C plates provide up front. My reasoning was more along the lines of why wouldn't I?
I have them, and they didn't really add any more extra noise to my street driven 97. Performance wise, I really couldn't tell you because I added the MM TA and MM Adj. Stabar at the same time. My logic for running them in the first place was the same as 1svtfan's.
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