I don't know if this old chestnut has been discussed here or not. There were some engineers who would not accept Wilwoods because the calipers had no dust seals on the pistons. I raised this with the then RTA and was advised they had no issues with un-sealed pistons. Likewise my approving engineer was happy to approve them. That was some time ago when I bought them and they have been just sitting waiting to be fitted.
I again today read the NCOP for brakes and see that from Jan 2011 seals are required
http://www.infrastructure.gov.au/roa..._01Jan2011.pdf (see 2.7.2)
Does anyone know the real state of play?