That is because your original already got snail. Unless your power jump is a lot you will need to soup up the suspension too. For me it was like from 100bhp to 200bhp, so brakes and suspension mod was a must...I also want to get those brands if possible. But right now, there is no coilovers (HLHS) offer by those brands for my car. Not even for the 308. The only on i have not is BC V1. But will keep researching la.....
And adding on, i do power first then only handling.......