Well, I just completed my swap in a 2008 Outback XT.
At least mostly. May be one of the cheapest ones yet, but to be fair I didn't do the "full" swap.
I got a Forester STi tranny with Impreza mount for $1500. A random R160 with 3.90 gearing to match the Forester tranny's front diff, and swapped the ring and pinion into my OB's LSD. That was $125. $50 for a 4EAT driveshaft, another $45 for a 6mt slave cylinder. $260 for a 2015 STi flywheel and clutch with only 15k on it. Finally, ~$200 for odds and ends from cheapsubaruparts (shift linkage, new clutch fork bc the one that came with the tranny was in pretty rough shape, some seals and such).
All in, about $2200, and I did the swap in my garage, on jack stands (22" high), by myself, over the course of about 3 days (maybe 2-2.5 in work days, I only committed about 5hrs of work a couple days). It was pretty easy since the old tranny was just dropped a couple months ago for a new clutch (ugh! That was a waste of money), so the hardest part was actually just getting the 6 speed under the car and then onto the tranny jack.
Like a dummy, I forgot to order a new reverse lockout cable, and the one on the tranny is Impreza length so it doesn't really lockout as it should. Oh well, I'll get it eventually. While I was under the car, I also installed new grounds for both heads since they were both gone, and also discovered that the car previously had an exedy lightweight flywheel (in addition to the Perrin lightweight crank pulley), so I'm hoping that putting the stock sti flywheel in and replacing those grounds fixes my intermittent random misfires too. All I have left to do in the car is reinstall the intercooler and intake!
