Parking / Emergency Brake cables

Where you mention using a hose clamp I use a boxed end wrench ( 9/16" 12 point I think) The other place you mention is the bracket on frame rail ? If so there are horseshoe retainer clips on the forward side kinda like those on front fluid lines. To get front cable out of the eyelet piece on the floor that adjust nut has to go. Split the nut with a die grinder or hacksaw.