I have an 04 S281 and it has the boost pressure and the H2O temp gauge on the dash. I just bought a fuel pressure gauge that is the same style as the other two gauges. I plan on mounting the fuel pressure gauge on the a pillar. Does anyone know who made the gauges for 03-04 Saleen and or how many ohms the fuel pressure gauge would be. I have the gauge and no sending unit. I have to get a sending unit with the right ohms in order for the fuel pressure gauge to read accurate. I also need to know where to find a new water pump for my heat exchanger. Thank guys.