ok i have a 99 mustang 3.8L i've put 3.73 posi gears on it 18" cobra r wheels dual flowmasters, hedmen headers, upgrade camshaft, stage 1 2 3 jet superchips, K&N cold air, Lambo door conversion, the interior is completely chrome, lowered 1.5". i need to know what i could do next? and where could i find pistons and aluminum heads 4 a sixer at? i've checked everywhere! plz help guys!