you want a wide variety... sorta like STK CRX was saying. you cant please everyone, but if you have a little bit of something to at least interest everyone then you will have customers. have everything from Tein, spoon, to APC. even though you might think something like a shift knob or something is cheesy to sell or display, think of all those impulse buyers who might go that looks awsome, lets go for it. if you dont give them the chance to impulse buy as much as possible, then your gonna loose out on alot of money.