I know its possible, I know its a bolt in matter because the hardbody uses a KA to start with. But my questions are. If I ran the KA24DE harness with ECU would I be able to keep my factory interior harness? Or would I have to use the s13 harness and get the cluster from the same vehicle. Or like I said could I use my cluster with stock harness to the DOHC ECU and still be able to read the gauges accurately?

Thanks for any help in advance,
-Mike