[mongocanfly]

The only thing the ecm needs to see is water temp, that uses the LS sender on drivers head
use a sender adapter for oil pressure, and what I did for water temp was drill and tap pass side head for that sender
You don't need vss with a manual, I just folded that harness plug back into the wire loom..
The earlier LS engines won't have all the crap that everybody deletes..
If the engine is dbw it can be swapped to dbc by simply changing the throttle..
But you need to know all about your setup before you by a harness..
And also whoever tunes your ecm will need to know of any changes