what are the correct sizes? and where do i need to undo it? at the hard line? or at the caliper? the caliper is EASY to get loose...im not concerned there...it would be the hard line that i would need to find out where...is that behind the splash shielding?

1998 SVT 2.5" exhaust to 2.25" duals, homemade intake, 94A poly RRR, B&G Autobahn Series Springs