Rocky, I would probably agree with that statement. There was probably a chassis number where certain upgrades were done, but that isn’t saying if that part wasn’t available that they wouldn’t use something else just to keep things moving down the assembly line.
The reason why I had to remove my tachometer was the directional indicator light wouldn’t illuminate when I put the directional to the right. Outside the car the right blinkers worked. I had my interior reupholstered and since the dash was out it would be easier to replace the bulbs. I decided to put LED’s in to illuminate the poorly lit gauges. It was the LED that was the problem. I put the OEM style bulb in and the problem was resolved, however the LED was still in the tach socket, so that had to be fished out. I spoke to Jon at Pantera Electronics and they have a solution for this. I didn’t buy the LED’s from them but Jon was very helpful.
Hope this helps anyone who encounters this issue.