GC8

Im looking to buy a set of Wilwood Calipers and have them adapted to my (not Subaru) hubs by Ian Godney. Ive a reference chart which lists the current models piston sizes and disc thickness suitabliity, but unless Im missing something obvious, I cant see whether any models have dust seals. It certainly doesnt seem to be a feature that is mentioned: does any one know.

Another question that Im struggling with is the calipers 'disc thickness' capacity. Standard discs are 282mm x 20.5mm, so do I opt for the 120-6816 model (to suit 20.6mm / .81") or the 120-6815s which suit 25.4mm? Id like to be able to move up to big (and thicker) two part discs from Godspeed at some point too, so Im tempted by the parts that accept up to 31.8mm discs... Would this be safe, or practical, even if Wilwood do offer a model thats fully sealed? This is for a track car, but I dont really want to be stripping the calipers down and cleaning them every fortnight.

GC8

Anyone?

Simply: do any Wilwood calipers have dust seals and how to much wider a disc capacity can I go, over my actual disc, safely?