ADR 3/03 seats

[GTS]

Hi Guys,
My name is Stefan and I supply seats to the classic car market since 2003 and just got an email yesterday about the concerns about ADR XX/XX.
So if I understand it correctly- forgive I am a German living in Texas which explains some....
Seats have to be min 850 mm from base to to of the headrest, there can not be more space between the headrest and seat max 60 mm, headrest have to be min 170 mm wide and min 115 mm tall.
Am I so far correct- tried to access the Australian Gov site but got always blocked out- who wants a German Texan....
All seats have to go through a certification/approval test ?
So far we have seats that exceed the 850 mm, headrests are 250 mm wide and 140 mm tall.
So how can we help ?
We have supplied many customers in Australia, but mostly classic cars that refitted our seats into their cars, or does that rule also affect older cars after restorations.?
Thank you all for the input.I had to come up here in the US with a few ideas as they wanted to ban classic seats from drivers ed or clubracing when used with 5 points.
with kind regards Stefan GTSclassics under ClassicCarSeats.com