I have found a tach out of a 66 chevelle that has a 7000 rpm face and the yellow band starts at 5700 and ends at 6000. The red band starts at 6000 and ends at 6200. It is a Knee Knocker Tach. All other tachs I have seen, the yellow band is 5200-5500 and the red is 5500-5800. Can any one tell me what motor this tach was for. Thanks for any input. Mike F.