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the part numbers for the NA supra and TT supra master cylinders are different. you need the TT master cylinder to retain proper brake bias. if you go through the effort of swapping all the break then do it right.
straight from NAPA website:
Product Name Item Number Price Select
Brake Master Cylinder - New
EngineAspiration:Turbo;UP 390198 $239.00
Brake Master Cylinder - New
EngineAspiration:Naturally Aspirated; UP 390202 $239.00
to the OP: contact ScottUrNot. he was selling a supra TT master cylinder and brake booster a short while ago for pretty cheap.