a s4 na. I have searched but i really havent found the answers to a few questions. I have come across a great shell (s4 na) thats in mint condition other than a blown engine. I have a working s5 na with a shell that needs some work . I was going to take the full long block , ecu , and tranny and do a straight drop into the s4 using all the s5 electronics. No swapping of parts of any kind. So far i think i can do it but my question is that MAF. I believe its a different harness. IM just trying to figuire out if there is a way i can rewire the maf to use the body harness on the s4. can anyone point me to any write ups or other discussions on this. most of the ones i have found normally talk about swapping omps, front covers, injectors, and what not. i simply want to drop a s5 in a s4 and drive it away .. no real swapping of componets ././