OK - I have a KZ400 manufacturing date of 3/77. Bike is what I believe to be all original...What I have not seen online yet is the following. My bike has painted front and rear fenders, an original (Kawasaki etched in the pipe) 2-1 exhaust and only has a speedometer, NO tach. - Is this a hard to find bike? Model (VIN states K4-#####)?