i would go standalone for your goals. if you're looking to make 300+ hp/tq you're going to want something better than the ej22t harness. and IIRC the 94 imp. doesnt have a knock sensor, but the ej22t does. merging the harnesses together still only gets you the stock ej22t ecu timing and fuel maps. i would go with e-manage or something of that sort. you should look around in the EM forum for advice on this.