I think they were GT owned from 1988. I can't find any Auburns in adverts after around 1998
All rear ends were chromo, then Aluminium ones came out then the chromo ones were phased out (I think)
1994 the BB height and geometry of the front triangle changed.
No mention of any changes to the Rear triangle so hopefully one rear end fits all!!

These are the only catalougues I could find on the web (1995 and 1996). They're shit quality too!!
1995 Catalogue




1996 Catalogue



