Ok before everyone burned methis is also my first post in the forum I been doing the research and also on the forum search before someone smart guy posted. I bought a civic ek back in 2019 been trying to do a budget project but already is out of hand 😂. First the car was a Auto was swapped to a manual D16y8 on the top of the ecu said is a 99-00 keep in mind Im the 1,000 owner of the car so don’t know what is been done. My question is on 2021 what is can be done to convert the car because right know nowhere on the harness is a wiring for any of the o2 sensor, not even on any of the locations that I look on manuals and over the the internet also the manifold looks like a crx manifold. I buy a new header and stuff but can I put a wide band instead of a o2 with the p28 ecu and harness jumper should be good to go? Or I need something else I don’t want to be splicing cables or nothing my last option is spend a 1,000 on a damm rywire or wire work harness to fix my issue because all the info that I find is from 2005 to 2014.