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I went from a single disc to the McLeod RST twin disc on the race car. It is a nice setup and was not hard to install. The twin disc works great on the race track and feels more connected than the single disc.
However, it is difficult to feather and tends to be either fully engaged or not which can be problematic when you are trying to drive at a slow speed through the paddock on the way to the grid and people are walking all over the place. I have a close ratio top loader, so that means a very tall first gear, if you have a wide ratio it may not be as problematic. The twin disc tends to be more jerky on take off, the single disc allows you to feather the clutch if you are trying to ease into traffic, or a parking spot.
If all depends on what you are planning to do with the car, and your typical driving situation. Good luck with your decision.
Jim
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