Genuine 322 fronts getting more difficult to find, there are the aftermarket brackets on ebay
https://www.ebay.com.au/itm/263136426361
https://www.ebay.com.au/itm/283709614621
Then can use any BA caliper, swap the brackets with the new ones, it is the brackets that are different on the 322, rest of caliper is same as the regular BA.