She's giving me... worries!
Well after driving cautiously for weeks because I had what appeared to be exhaust alignment issues I found the real cause. One of the damn bolts I dropped while re-fitting the engine managed to wedge itself between the transfer housing and the front-rear crossmember. For a while I thought I'd had solid mounts fitted by the missus when i wasnt looking, alas I found a slightly mawled bolt and had to extracate it with a long chisel and screwdriver. Silence has returned to the house of Four.
Water leak from the pipes to the right of the water pump suddenly got massively worse though! Arse, if its not one thing its the other!