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
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