Need New Engine Help

Hey guys, im new to this new engine stuff. I have a 1989 Honda Accord LX, with about 175,000 miles on it. Im looking into getting a new engine for it, because we believe that there is some carbon build up on my piston head, and my car shutters sometimes when it turns off. So i wanna get a new engine for it, but i want one that will give me more torque and horsepower for those steep hills. But at the same time i dont an engine that will require extra parts for installing, or rewiring and etc. Would an Acura engine do that job or what?

Help me with some info plz.