I have located an original owner 140k 83 320i. All records excellent to showroom un restored condition. My questions being: What should I look at? Dunb question I know. Are there performance upgrades for this car? Blah Blah Blah... The car is a dailey driver with a manual trans. I am a recent first time BMW owner 3 months, already badly hooked to the experience. Any feedback will be greatly appreciated.