ok here it is. i have a 99 civic dx. i bought a semi built y8 motor for a really good price. here is the problem: do i modify the existing dx harness and run wires for the knock sensor and vtec and modify for iacv, or do i just get a y8 harness? now, the only draw back i can tell with a y8 harness, is that there is no secondary o2 wiring on it, because it runs through the car and through the floor board on the ex and si's. how do i compensate for that?