I was just looking on Rock Auto for a master cylinder rebuild kit for my iroc r/t and I don't know which one to get. They have one listed as a rebuild kit for "21mm 4 wheel disc 15-16" wheels" and one listed for "24mm 4 wheel disc". I was tempted to just order the 24mm because I think these are the largest brakes for our cars, but I'm not sure what the actual measurement here is.
Thoughts?
http://www.rockauto.com/catalog/rafr...arcode=1089671