I'm on the verge of purchasing a 2008 Sahara Unlimited with 66,000 miles omit for 20 grand. Seems to be a great deal, 2 tops soft and hard, tow package, clean inside and out. The thing I don't know is under the hood. It sounds great and everything looks good but I'm not a expert. Anything normally going bad at 60,000 miles? Anything that stands out to get checked?