[NHRABill]

You just don't drop a motor in and out of a newer car without major complications. if the motor you are choosing was never intended for the vehicle you MUST check your local laws to see if it is allowed first.

If you are a city driver then a 4 banger in a GP is a total waste you will get worse mileage in my opinion. I believe you will never recover the cost in doing the swap just for the cost of materials.

Ask anyone who has done such a swap it is almost always low dollar for vanity saying that they did it or a combination of the 2. As stated earlier there 3.8 is a great engine and could make a great reliable car if you do some mods and maintain the car properly. if you want a gas miser don't reinvent the wheel look at some other peoples setups and work off that. Many people in here have been working on their cars for many years and have come up with great positive and negative results we all can learn from. Keep reading the forums and I wish you luck.