after a long and gruesome search, i finally bought a Silver on black leather '00 S70 (sunroof and wood-grain trim) with only 54.000 miles. i feel i overpaid ($7900) but my mechanic did say it was in excellent condition.<p>so being this my first used car, i'm not feeling like it's mine yet. so i want to personalize both the interior and exterior, mainly cosmetic. not sure if i should upgrade it mechanically. <p>any suggestions?