i have a 2015 70D Model S with an unplugged rear diffuser. i live in the Los Angeles area. Unplugged Performance Rear Under Spoiler and Diffuser System, unpainted we got a yakima full swing rack for a 2 inch hitch that looks like this. FullSwing our plan is to hold 4 bikes on that rack. i dont like the look of a hitch hole, so i was told that a stealth eco hitch is available where you can hide the hitch hole? is this true? anyone know if a reputable installer in the Los Angeles area? any advice would be greatly appreciated. thank you.