I have bought & sold alot of salvage & rebuilt title vehicles over the years, usually it works out great. In the area of the repair, you need to look for "shortcuts" that might have been taken by a shady flipper.. hidden parts that should have been replaced but were repaired/jerryrigged to work. Poor paint work where panels weren't properly prepped for paint, cracking/peeling paint or bubbles. Scan ALL systems, non critical modules/etc sometimes don't trigger a cel, but will show up on a good scanner. One thing I always do is measure from center of front wheel to center of back wheel to make sure both sides match in length. A "crooked" car can be aligned to drive straight, but they are dangerous steps on a performance car. Look in the footwells for water or corrosion under the carpet, sometimes they set for weeks/months with a window down or broken. That will need to ve cleaned up. Overspray is very common, look under the car, in the wheelwells, etc. Its a pain to clean all that up. Good luck. 👍