Thanks for the info. What size exhausts do these have stock? I'm actually located in the U.S. That site just had the pics of the car. I actually have an aftermarket EFI I would be using rather than the carb or a stock TBI setup from that era. What suspension mods are common? As mentioned this car does have a suspension upgrade from the factory or dealer. I've also read that a 180* thermostat also helps why is that? With the efi system I could also advance the timing about 2 degrees, which according to my searches helps give a little more power also.