Flo und Den
I had to log in here as I wanted to respond. I would suggest you email Doctor Diff (look up his website) as he has everything you need to give 4 wheel discs, including park brake, for a budget of around $1300ish. His front kit uses 11-3/4" C Body rotors and slider caliper brackets and the rear kit fits your differential housing and uses Toyota discs, adapters for Cobra Calipers and is a 10.7" disc which gives the correct pro portioning front to rear. These kits fit inside your 15" wheels. His name is Cass and he resides in Montana. Best to talk/email with him first though.
Good Luck