rx8 brakes on rx7 fc turbo

[billybobbooth]

hi guys im looking at sorting my brakes on the rx7 fc turbo
 
im going to use supra discs with 4 pot radial calipers on the front.
 
my question
 
the backs im looking at using the 03+ complete setup from a rx7 302mmx18mm discs with the calipers from rx8 03+ as these use the same sort of handbrake setup do you guys this the rx8 will fit? if i have to have the caliper mount brakets re made thats fine.
 
thanks as always.