Brad beware. The $200. original looking tach that is available out there is for a V-8. Some of the vendors will tell you it works for a 6, but it doesn't. I had to return it to get my money back AND write an explanation to them as to why it wouldn't work. Of course, you also have to have the right gauge cluster for it to fit. There are instrument companies that can re do them to work with a 6 but it gets expensive. For the above reasons, I went with the dolphin gauges. I'm pleased.
http://rides.webshots.com/photo/2115920780071636143IdCjzd P.S. That original full gauge cluster I have is available minus the bezel.