well boost is def gonna be one of them, i like the greddy one (black and backlit green,) but anyone know if they make on in psi?? also, wat other 2 guages should i get. i'm looking into air/fuel, but i notice alot of pople get egt guages. isn' t the point of egt to monitor air/fuel?? so why should i choose egt oer air/fuel?? also what should my third guage be??