Wanting to mod my 2000 GTP here pretty soon. Only had it a week and a half but I've wanted one of these cars for years. I finally found one in good condition with good mileage. So with that out of the way ABOUT how much do most shops charge to installl an intercooler and a set of headers? Might even put some 1.9's on it as well. I know prices can vary greatly. Just looking for some ball park estimates.