In cali look for and make sure all emissions are intact, of course you should know this, but just saying. Also look for frame damage lots 4x4 guys like sand duning out there. And rocks are hidden all through them. Just cause carfax wasnt reported diesnt mean it didnt happen.
Now the most important part is take the bubble hood off and trade for my hood lmao j/k. And with that many miles id have it conpression checked on all cylinders before i buy it. You could be looking into a possible piston ring replacement.