welcome to son. now you see why it drives ppl to substance abuse.
(me for one.)
my best advice is to find someone doing a partout and get it off them. are you looking for the whole assembly or just the pedal? it may look wired/fit wired but u may be able to put the whole assembly from another car into the s13. and if your that desperate you may be able to take and heat/bend a brake pedal (assuming all you need is the pedal) to work. iv never seen any of this done but it sounds ok in theory