whiterps13 wrote:New bushings are going to do very little when it comes to road noise. You should seriously check out dynamat or some other form of sound deadening material.
Really, anything other than an OE bushing (free with purchase of really expensive subframe) will probably be stiffer and transmit more noise to the cabin.
I say just man up, get solid aluminum bushings and enjoy the whine of your differential.
With the mileage you have it would be great to replace your bushings, I just don't know if it'll do what you want it to.