I'm almost finished swapping my 2000 GSR engine into my 98 LS but have a couple questions. 1. I swapped the engine, plugged in a P72 GSR ECU and the car turns over and runs no problem. The tachometer is not working. Any ideas? Anyone know where the tach gets its readings?<span style="color:Red"> Only Problem Left</span> <span style="color:Silver">2. Is this plug vtec, knock sensor and the IAB wires (came with the 2000 GSR engine harness but have no where to plug it in on the 98 LS)? <span style="color:Red">Problem Solved</span> </span> If anyone can give me input, it would be greatly appeciated. Thanks.