With NCOP now making specific mention of dust seals, it's nice to see that Wilwood have released an option for some of their 4 piston Superlite and Dynapro calipers:
http://ns2.wilwood.com/Calipers/Cali...emno=120-11481
http://ns2.wilwood.com/Calipers/Cali...pec=&pistarea=
Tab mounted or radial mounted.
My only concern is that they've stepped down from stainless pistons to aluminium. Shame about that, but I guess it helps to keep the price within a few bucks of the originals...