I am looking for a little advice. I am going to look at 1990 chevy sport 4x4 tonight. It has 139k on it. What are some common problems that I should for? It has the 350 in it. I will at least make sure the motor matches. It has a 3 inch body lift on it. Here is list of things done to it. new A/T tires, breaks, shocks, front 4x4 shafts, u joints, rear main seal, built trans with HD clutches. Thank in advance