I just bought a 140MPH speedometer and guage cluster out of a 90-93 mustang and plan to install it into my 88 mustang. I had heard that the fuel guage and temp guages etc.. would not work properly on my 88 car because they were changed for the 90-93 stangs. I was just wondering if anyone had any information on this, because it would be a whole lot easier to install the whole cluster. Any help anyone can offer would be greatly appreciated. Thanks guys.