Just did the rear pads on my 01 Outback at 65k miles. They're cute little pads back there in contrast the beefier ones I changed out in the front around 58k. This car must be heavy because my original front pads on my Mazda 626 lasted till 90k, and I didn't have to change the rears until 120k!
The job was very easy, 5 lugnuts, a caliper bolt, compress the piston, clean up the shims, clean some dust out the hardware, pop on the shims on the new pads, slap em in, close the caliper, replace the bolt, remount the tire and wee! Didn't bother bleeding as the 60k service I had Subaru do included that that, so everything in there was fresh, and they were kind enough to leave enough space in the reservoir that I didn't evn have any siphoning to do when compressing the little pistons on the rear.
The tip I wanna share though is about the aftermarket pads I got at Autozone. These things all looked the same shape, size, outline, but there WERE inner and outer pads. I found (later of course) that you could install two outer pads on one wheel just fine. But then you were screwed on the other wheel because the inner pads have two raised bumps that prevent the caliper from completely closing if installed on the outer side. So, I got to change one wheel twice. :-)
So, look for those bumps on the top of the new pads and stick those babies on the inner side.
Best Regards,
-- Todd H.
2001 Legacy Outback Wagon, 2.5L H-4 Chicago, Illinois USA