Can you tell me what size V6 you have? That will help me determine where to point you as far as the fpr. Based on my experience I truly believe you have a fuel pressure regulator problem and would spend the money diagnosing that problem before I would move to the fuel pump. The fuel pump for your car will be around $100 and you will have to drop the gas tank to get to it. It is not a simple bolt on like the older cars were.