my pipe split 4 or 5 years ago, cost a fortune to replace so my friendly good friend toyota/lexus mate blanked it of, bolted it back on and not had a problem since runs like a dream ,,
I have a 2 cd copy of the ls400 1994 if you have not been sorted out give us a shout and ill send you a copy but you will not be paying £150 mate. lol.