No you cant,.. for the celica its weird , they have three types of coilovers The 1st generation where it will only fit the stock shock, the 2nd generation which will fit aftermarket shocks such as koni, tokico's , kyb etc... the 3rd is just a true coilover, I am going with the 2nd generation one which will fit the aftermarket shocks, the first will not be worth it cause you eventually gonna have to get new shocks anyways!! hope this help...