f20cmx5

I know that people sometimes take s2000 engine harnesses and use them to make k-swap harnesses. I also know that a prb ecu (kpro) can be used to run an F20c with sensor swapping. After installing the new sensors, what would prevent me from using an rsx engine harness, hybrid racing swap harness and prb ecu to run an F20c? Crx engine harnesses plug into obd2 b18c's with minimal modification and k20a2 type s harnesses work on k20z1/z3's etc that's part of the reason I feel like this is possible. Any help/insight would be appreciated, thanks.