I cant see the ad but I had a 2000 GTS with a stock motor and slapped a turbo on it. Great fun car, handled amazing, never gave me a single problem!
Edit: And mine was salvage, but I bought it like that and fixed it myself. It depends who fixed the car. You can get a salvage car that is a killer deal, and you can get one that was hacked together and is shitty. Salvage does not mean it had frame damage either. I've been through 20-30 salvage cars, from light fender bender to frame and roof damage to floods. Buddy of mine just bought a 2010 Altima with 5 miles on it, brand new from dealer, they parked them near a lake and the lake rose up and flooded the rear ends of a shitload of cars. Window sticker on the car said 24k he got it for 13k. Good deal if you ask me, runs and drives perfect still had the white film all over the car.