Not heard of a J-pipe before mate. Yeah, if it's even touching it in the slightest, the vibration will give louder noise.
So, got the standard pass side back box, and got the mid section heated up and knocked back into shape so they fit like a glove together. Well Happy! Fitting it wasn't easy as the standard exhaust has a fair bit of weight to it, but Gayle gave me a hand and we got it on. That bloody extra bracing reared its ugly head again! Even though I had fired the torx bolts in and out loads of times after fitting the stainless exhaust, and covering the bolts in copper grease before hand, one bloody bolt had siezed solid! I mean "how????" Impact gun wouldn't even shift it (in the end it destroyed the torx head). Don't understand why it stuck, the rest came out ok. And when fitted, the threads were so clean/free you could do them all the way up by your fingers then do the final torque with the ratchet, so puzzles me. Did manage to swivel the grace around enough to give just enough room to get the exhaust past it.
Fired her up, no leaks at all, exhaust sounds perfect! Nice and quiet, although if giving her beans, you still get a very subtle gurgle on over run which is exactly what we wanted. Picks up really nice too, can hold a conversation easily with passengers, and can hear the supercharger whine again!! Oh, can also hear the annoying squeak from the dash that I had forgot about, but can fix that by either fitting some felt to the back of the trim where it goes on the dash........or turn the radio up louder! lol Poppy is now driving sweet, ready for some summer fun!