So I finally got around to attempting to fit a Gen 1 LSE rear valance to a Gen 2 Bumper. I planned on cutting the LSE valance to the same shape as the gen 2 valance side sections. As you can see in the pics, the bumpers are shaped differently. The Gen 1 bumper flares out at the bottom but the gen 2 tapers inward. The bottom picture is of a gen 2 LSE valance side section compared to the gen 1 LSE. The gen 1 side part would stick out about an inch or so near the exhaust port. I am just going to put the Gen 1 side skirts on and go with that. Looking at Mlara's car, they flow with the body lines very well even without the rear valance. I will be selling the Gen 1 valance very soon.