i must say this forum is brilliant

i have done a search and can not find what i need i would like the dime=ntions of the flexi pipes on the cat of an A3 2.0 FSI 2004 i would mesure them but they are not there the car i got did not have this pipe on long story but have found some where that does replace ment ones but i need the length of the flexi and the diamiter of the pipe or the flexi where it joines the pipe

thanks in advance for any help