Ok, I was successfully able to remove the old cluster and replace it with the new one. I just want to verify a couple more things. As far as the tach is concerned, it should work by just plugging in all the old pre existing wires in the back of the cluster? I won't need to wire anything new up? Also, I replaced the needle on the speedometer. Is there any way I'm going to have to calibrate it or as long as it rests on the stop peg at the bottom it should work fine?