2000XJ AW4, I am wrapping up my doubler-D300 swap. I accidentally bought a short shaft D300 instead of the long shaft so I can't swap my 231 spedo into the D300. My rig is more or less trail only, any issues with just leaving the speedo harness off and giving up on the guage or will I suffer other issues as well? Rad designs shifter so not too worried if it will affect shifting.