Jim,
I am using the replica Hermera wheels , directly onto a hub , so what I am getting at before I buy discs and calipers is what the thinnest caliper distance anyone has come across between the outer edge of the disc and the outer edge of the caliper.
I know that these wheels do not fit a Murcielago with CCB's but these are a larger diameter disc, but is the caliper anything special in it's 'thin-ness' if you follow me.
Cheers.