on the cylinder head tins youl find a vw logo stamped into it and as far as im aware the other tins have aswell although ive never really looked in to much detail and its nice heavy gauge stell andprob coverd in yeras of crap
. However if it has the audi badge stamped next to the vw logo its still genuine tin but vw mexico/brazil stuff.
Just put a wanted in the wanted section and keep an eye on the for sale section or maybe contact megabug 02083177333 it does come up and is worth it as ive seen soem terrible fitting repro tinware.
oh and if a certain user name with initials D&Y pops up stay away