sgcooby

Previously had a scoo bysport backbox fitted to my MYo3 WRX and it worked fine. Yesterday i fitted an afterburner centre section which seemed to fit perfectly but noe the back box is banging, i presume, on the bottom of the car. All i can think is that i need longer rubber hangers. Where can i get these? Does anyone know of a supplier of longer ones??
Thanx
Stephen.