i have a 96 GT. right now the car has dual 2.5" with o/r X pipe and flowmasters. should i get shorties that bolt up, like stock so i wont have to mess with the exhaust? or long tubes and the just have conecting pipes (to X pipe) rans at a muffler shop. would I have problems with groung clearance because my car is lowered w/ ford racing springs. what about fitment. and are LT's that much better?????