Who wants to drop twenty or thirty grand -- or let’s face it any amount of money at all these days -- on a new set of wheels when you might be able to fix up your existing vehicle on the cheap? Enter auto-parts retailer Autozone (AZO). If the Memphis-based company’s second-quarter results are any indicator it appears that you’ve been spending a fair amount of time in your garage souping up the old rig. Autozone earned $2.03 a share in the period ended February 14. And frankly that’s a head-turner because the estimate I’m seeing is for $1.84 ...