I also removed original facia and replaced with dual (quad) exhaust cut out facia as well. I purchased an OEM axle back through my local OfferUp for $100. I figured it was chap enough to not have to worry if it was an XL or not. I’m going to install the OEM hangers for the mufflers (on order, should have them in about a week cost $156) and the mid pipe from a vin that is non XL that has the quad exhaust. If I am correct, all I will have to modify is the flange from the headers to mid pipe, since I believe the quad exhaust pipe is bigger and a little shorter and possibly move one exhaust hanger. I should have everything ready to install in a week or two.