does anyone no if these cobra sport exhausts off ebay are any
good,sound v cheap £149.99-£169.99 for a rear box for a wrx/sti.

 

That depends on what you want from an exhaust, if its just for noise then yes its fine but if you want more then keep looking in the for sale sections on here & other scooby forums, for an extra £50 you could pick up a much better full system with a quality name on it.