Simple airplane. You might want to roll it upside down and look at the oil pressure. Make sure the prop AD is complied with, and the 25 hour crankshaft inspection. Also look for MS bolts on the landing gear. Easy to spot; they take an allen key. Big discount for U bolts! Nobody has U bolts any more.
Other than that, just normal stuff. Check the battery area for corrosion, and make sure both fuel tanks are full and not leaking. I have little respect for folks who sell airplanes with empty fuel tanks.
Before you buy, familiarize yourself with the few ADs on these aircraft. We ought to do a synopsis here, but not this morning, at least for me. I have done it for Cubs on other forums, so maybe at some point.