Background: this is in reference to the previously mentioned 2004 Subaru Impreza WRX Wagon. This isn't a track car: it's only for fun street commutes and general Daddy duty.
The car has upwards of 115K miles now and I'm hearing what sounds like aged bushing clunks and creaks coming from the rear suspension, especially at fairly low speed largish bumps and dips. I recognize that the bushings are consumable parts so I'm planning to replace the ones that I can do with hand tools and task out the ones that I can't.
So, here's the question: which type of bushing will have a longer lifespan, stock replacements or urethane "upgrades"?
I am very aware of the NVH price that must be paid with a full set of urethane bushings but I'm willing to consider it if it means a longer time between replacements. At the same time, a full set of stock replacements will also feel much better than the frankly weary parts that I have in there now.
Additional information on which bushings can definitely be replaced with hand tools, which definitely can't and which are on the borderline would also be appreciated by both me and future readers.