Ok, so i know that i am asking a repetitive question that i have read about many times on here. I am no noob to honda either, but every time i look up what i specifically need done everyone seems to be missing a few details i need. i am going to do a swap soon and wanted to get some information before i start it. i have now a EJ1 civic EX d16z6 engine. my question is i will be buying the type r obd2 engine. my car is currently running the D16z6 harness which already has vtec wiring and if im not mistaken already has a knock sensor? (am i correct in saying this) i know i will need the obd2 conversion harness so it will fit on the p73 ecu the engine comes with (its a complete engine with axles shift linkage, yada yada). Will i be keeping the D16z6 wiring harness or do i need to get a usdm type r wiring harness (since the jdm type r harness is for the right hand drive) or gs-r? i could use the help before i go out spending alot of money on this i want to get the information right the first time. thanks.!