installing a sohc knock sensor... good place to put it?

[tastyratz]

ok so I have a knock sensor that came out of a dual cam s13 that I want to install in my single cam. Im running an aem ems which can read the knock sensor. My questions is how important is the install location? I know on the duals its RIGHT under the intake manifold and theres a drilled and tapped hole in the block to install it to. thats all fine and dandy but the sohc doesnt have that.

Does the knock sensor have to be mounted adjacent to the combustion chamber? I.E. do I HAVE to mount it right under the head and at the top of the block? Can I mount it using one of the bolts that hold the intake manifold on the block or maybe one of the bolts that holds the oil filter mount on the block? will mounting it that far down cause it to not be able to pick up on knock that well?
am I going to have to practically rip this motor out to drill and tap a hole or weld a stud to the block so I can have accurate knock readings? how much does it REALLY matter?