After feeling the factory RMM worn out and having a clunk against the firewall I decided to buy a aftermarket one. I went with AWR mainly because the price. I originally purchased and installed it with a 88 duro poly bushing. It was awful. The vibrations from it inside the cabin made me not even want to drive the car. I contacted AWR and they told me they'd send 70 duro bushings for free. After installing the softer bushings I am a happy customer. There's almost no vibrations anymore. The car rips out of the Hole and putting more power down to the ground. Definitely go with the softer bushings if you daily drive your car and don't want to make it feel like your driving a drag car.