Well , I looked at the R6 brake caliper ( one on ebay for $8.00 ) and its a single piston caliper , so that makes it a lot harder to make it work with the blaster . What a lot of us here do is get a 1995 1996 GSXR rear brake caliper and make a mount for it . Its a dual piston caliper wich means that it squeezes the rotor from both sides , so there is no pin sliders for the caliper to adjust as the pads wear . Its 100% easier to set up .
couple of pics of my set-up
The bracket was made from 3/16" steel plate and cut with a plasma cutter , it can be cut with a jigsaw with a metal blade , will just take longer . the master cylinder and reservoir is from ebay off a cr125 dirtbike . and the caliper is from a 1996 gsxr 750 . and the extended rear brake line is from American Star Racing ( they make tons of blaster parts )