You may be able to call Stewart Wilkins Motorsport to see if the have a second hand set about, He is in Syd.
the shortening was due to the patrol having the engine mounted higher because of the front diff and 4x4 stuff. the shortening and welding etc is a no-brainer, cost me $50 at an exhasut shop
I am not useing mine though, as im turbo'ing it. I dont really want to sell them as I wanted to put them on a 2nd car oneday...
the sound,,, oh the sound