B20z swap into 98 CRV

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I am currently "swapping" a b20z spec (99-01) engine into my b20b equipped 98 CRV. To be more specific, I am rebuilding my b20b using b20z pistons+cams+ECU. So the b20z engine had a knock sensor, but the b20b did not. Question: Where in the CRV's harness can i graft in knock sensor wiring, and where on the block do i find a place to thread said sensor into?

Yes, I have a header & b16 intake to finish off the build.

Thanks in advance for helpful info!
you will not be retaining the knock sensor and clearly there is no location for it to thread into lol

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