I bought a 2006 Sti 3 weeks ago with 44,000 miles on it, the cars great and im already worrying about it because i dont know previous owner. its lightly modded with a cold air intake, elimination of a throttle body under the air intake i believe (not to sure), rear sway bar coil overs and cat back. im worried this car might have been raced and then sold at low miles. what types of things should i look at that may have the most wear? the exterior looks pretty great with no dings or scratches, it looks new. the rims show very little wear only a chip of clear coat off in a few places, engine bay clean under the car dirty.. thin layer of black grime.. pb blaster and gumout worked fine on that though. any other information would be cool im definatley trieng too learn. i also havent been able to find a good shop manual for the 2006 sti. are there any (breakdown) manuals you might recommend?