I've got a full Hurricane system 1 3/4" Headers cats and 2 1/2" Cat back, Which I fitted myself on a Series 2 SS Manual Sedan. Fitted perfectly, but I can't say I would recommend it to anyone.
Sound fantastic at Idle and under full acceleration but drones badly between 1800-2000Rpm, some might put up with it, but got to me after a few trips. ended up reverting to the stock rear mufflers . Planning to install a Magnaflow centre muffler this weekend to see if drone improves.
If I do it a gain I would try the Manta