Problems with high mileage 4x4?
 

I’m looking at buying a high mileage ’88 Blazer 4x4 (full size) and I’m not familiar with the ins and outs of 4x4 setups. I'm thinking about converting it to 2wd, but if I don't, what should I be looking for when I go to inspect it. It has 320000km's on it.

Thanks.