buying a used wrx is so sketchy period. I got my 06 with around 20k from a subaru dealership.(at the time the price was right so I jump for the first one 1 found) about a year later I learn I'm only making 6psi and I'm missing the turbo heatshield and my downpipe was once removed and reattached with non OEM bolts buying a modded wrx/Sti is not a good idear. Most people are stupid are buy parts that do more harm than good. you should do alot of research before buy one. I wish I did. Good luck!