it was probably a custom job. really not hard at all as long as there isnt much in the way like the spare tire well or the gas tank but i dont think they hang very low at all on those cars.
u could probably get a shop to do it. for visual appeal yes but dont expect alot of power gain unless your running 2 cylinders off each pipe or if u have a turbo it might work if u have a 3 pipe that splits into to 2.5 pipes. that would be feasible but make sure if u do it to cut your other side of the bumper professionally so the little areas where the tips sit look the same.