Well, as it so happens, we have one identical to the one in the ad (purchased new). With the exception of one notable item (which I will cover next) we have had zero issues with the car. We now have over 100K miles on it.
The "notable item" is that for some reason, Subaru chose to install tiny thimble-shaped filters in the oil lines feeding the turbo and the AVCS mechanism. It appears these filters were only installed on the '04-'05 model FXT, Baja turbo and Legacy turbo etc. If these filters occlude to the point that the turbo isn't receiving enough oil, which is what happened to us at about 99K miles, buh-bye turbo. Subaru will tell you that if you kept up with maintenance, this won't be an issue. I'm not in total agreement.
Luckily, the turbo is the same as what is used on the WRX and they are easy to find used as they are replaced with bigger tUrBoZ for moar POWAR!! We found our low-mileage replacement on a Subaru forum for $100 shipped. The seller was a Subaru tech that had pulled it off of a WRX with about 20K miles on it...no free-play whatsoever The needed gaskets were another ~$50.
Now, when the filter for the turbo plugs-up, since that line also feeds the AVCS (Active Valve Control System) on the passenger side head, the car throws a CEL indicating an AVCS issue (P0011). Apparently, the ACVS mechanism is not damaged by this lack of oil, just unable to function properly without its oil supply. I don't know if shutting down the motor as soon as the CEL came on would have saved the turbo or not. It may have already been damaged at this point, but the CEL light coming on was the first indication of trouble. Soon after, the turbo started to sing its death song and shortly after that lost boost. Bear in mind that at the time I had no idea the filters existed, nor did I have a scanner with me to know what the CEL was. Foolhardy to keep going, probably, but I monitored everything and checked the oil frequently. Everything checked out fine other than the no-boost condition and the glowing CEL that I erroneously associated to the dead turbo. The car ran fine other than being down on power...no noises indicating death of an engine.
So, when we did stop, I began searching for turbo information. I started coming across posts about these filters and the problems they have caused. When I replaced the turbo, I removed the filter in the line feeding it as later models don't have them, anyway. There were no obvious signs of blockage (like dirt, metal shavings or coked oil). I can only guess a bit of sludge got dredged up on this trip (about 1500 miles IIRC). I reset the CEL, changed the oil a couple of times and drove it around and everything seemed fine. A couple of days later, it threw a CEL for the AVCS on the DRIVER side head. I had been warned this might happen. If the filter on one side was plugged, the other side would probably soon be or already was. Problem is, this filter is located in a banjo fitting BEHIND ONE OF THE STINKIN' CAM WHEELS!! Just for grins and giggles, I called the dealership to ask how much they would charge to pull this filter. $900!!!...um, no thanks. Searching on-line, I found a posting of someone who detailed how to get the filter out without pulling all the parts required "by the book". I decided to pay an independent $400 to do it as I had run out of time for fooling with it. The oil was changed again and the CEL reset by the shop. The car has performed flawlessly for the last 6 months and probably 5K miles.
We love this car and other than the ~$550 we spent on the turbo replacement (which I could've done for ~$150 had I more time), it's been all maintenance items. Just be aware that if this car in the ad still has the filters installed in the oil feed lines, there is potential for disaster.
Rallycross project should be fun.
