99VetteFRC

I am starting a LS1/4L60E swap into a 69 Chevelle. I have 98 Fbody engine, trans, wiring and PCM. I have done 3 truck harnesses and all have had the range sensor on the side of the trans. This one does not. Has anyone used this year harness and what did you do for range switch harness? Does the Fbody have the range switch on the shifter? I see some threaded holes on the side of the trans, can I bolt a truck range sensor to it and source some connectors and wire it that way?