for a civic back box to come out at an angle prop ul have to get a cat back cos they go under the middle of the back axle instead of loopin over the trailin arm like normal an there isnt much room to play wit the angle of it wen it loops the standard way over the arm....an most likely an axle back wont fit cos the pipe on ek4 an ek9 are are alot bigger than 1.4 one so the 2 bolts wont line up an prob wont seal onto 1.4 pipe...you prob be better off gettin a back box an jus weldin it onto the original pipie