I have been looking and looking for a deal on a k-5 blazer to add to the family. Family = 85GMC and 82 chevy trucks. Today i came across one in a backroads little town about a fourty five minute drive from a bigger city..it looked like a nice one with a newer paint job (turns out its only a year old) and looks great from the outside. On the for sale sign it was listed for 4000 which came across me as just alright for pricing on an 84 in this condition. I talked to the owner and he told me to just make an offer. I really didnt get deep into inspection but he claims its a newer 350 w/300 hp and he must not be a chevy goo-roo cuz he didnt know the type of transfer case just told me it was chain driven would this be the np205? anyway i am wondering about any fears i should have in buying my first 4x4 much less used. I know my older chevy's pretty well and i plan on inspecting this one much more before even offering a price. Any thoughts? And is the np205 a full time case? I didnt even look enough too see it it was manual locking hubs or what not just looked at the outside and peaked in for a few seconds. by the way what can i expect in gas mileage from this beast without any lift or anything? 8-9mpg?