It depends on what type of suspension you want to use. If you use coilovers you have the opportunity to lower it quite much, but you have to use alonger driveshaft on the right side, better engine mounts, harder settiong in the suspension, and also use adjustable TCA;s with roll centre adjusters, or your car will lose grip and balance. you will also have to de-Camber the rear beam for the same reason.