Buying 98 6.5 what to look for?
 

Hey everyone, I'm new to the 6.5 world and I found a 1998 GMC Sierra 2500. One owner. Truck is spotless except for door rot. Relocated pmd, braided steel oil cooler lines and new exhaust and drive shaft. Engine bay is spotless. I know the guy and he will be doing all basic matenice before selling it to me. Here's the kicker. It's got 273k miles on it. What should I look out for? It's got all new brakes and cv axles. 4x4 works. Is it worth the 3k? And what should o look for. Thank you!

Thanks. Most informative thread I've seen on 6.5s