So I’m gonna start by saying I’m new to the whole car building and dirt track racing. I bought a 98 Pontiac grand am that originally had the 2.4. But at some point it was motor swapped to the 3100 v6. My understanding is that the 3100 is a direct fit. My question is what exactly needs to be done In order for me to go back to the original 2.4. Do I need to find the original wiring harness and computer? I just need a list of what exactly I’ll need.