ok well right now im gonna replace the fuel filter, air filter, spark plugs, and im gonna change the oil since its due. Can the catalytic converter be plugged because of the leaky seals. I have to replace the muffler cause there is something broken in it. Also i brought this up before, While under load climbing hills. My engine makes a chattering noise and it only happens when im climbing a hill or under load. I dont even know where to start on that problem. Maybe a loose lifter? Idk

And maybe for the engine swap, Ill find a 3.0 l vr4 engine since it will be the easiest swap and i think it should have no problems bolting on to my drive train. It wont be for a while till i get the money to buy one so ill wait it out for a while.