I Figured it out in case someone else encounters this issue in the future.
I Tapped into a hole in the engine block....bore'd it out, threaded it and screwed the knock sensor into it.
I am putting a 2004 Corolla Motor into my 2000 Corolla.
Everything fits but the Knock Sensors DO NOT match.
The old Knock Sensor is a single wire and the new one is 2 prong.
Anyone know about this??