I used one Knock Sensor, Resonant.

I updated my 1999 S10 to a 5.7 liter Vortec / NV3500 to 24x / '0411, your upgrade will be similar.

I modified my original harness, using schematics from my local public library.

My original computer was already an underhood OBD2 computer. I basically added two cylinder to the old 4.3 harness, with the '0411 upgrade.

dave w