Originally Posted by cvc 22349a
Ask TurnerMS about the group n bushings. Solid alu or delrin are probably best for a strictly track car. If it's mostly a street car/occasional track, I'd go with the group n. For a DD, the oe M3 bushings are probably best. That's the feedback I've gotten from a couple engineers/tuners.
I have the delrin bushings and I can tell u the rear feels more planted and I DD the car.
The chassis feels more connected to the subframe.