Salvage cars are only a deal if the buyer is aware of what they are getting themselves into..you can't get a loan on it, or near replacement value if it gets wrecked again, stolen or whatever else. Also, if you don't plan on keeping it for long, you will get your a$$ handed to you if you try and get the majority of your money back out of it. It won't happen.. Basically plan on driving the car into the ground, or turning it into a dedicated race or rally car that could be a write off anyway. Ask the people who have tried to resell their salvage cars within a year of purchase..not a pretty picture.
Don't buy a salvage car from anyone without a Subaru shop doing a prepurchase inspection first. Even with that, sometimes things still get through the cracks. One of my buddies bought an '07 STi w/ 17k miles on it already leaking from the cam seals, and some other issues.. That's completely atypical for ANY 17k Subaru. Additionally, the car wasn't pulled straight before being put back together, so the front end/subframe is "off" underneath. But it sure is pretty from the outside..
Another friend bought an '06 STi w/ less than 40k on it, paid nearly book for it, and didn't do a prepurchase. Big boo boo. There is a raft of issues with that one.. not straight, rusty underneath, non HIDs, missing downpipe bolts, hemorrhaging oil, bad radiator, etc. A few grand worth of work on a 40k car.. Not so much of a deal then.
Buyer beware!!! Salvage parts are ok.. cars.. well that's up to you. There are many salvage outfits that have some fantastic turd polish!
You get what you pay for..