Play your games all you like. The 3-R syncros are 3rd party parts, and the design is wrong. They do not have the correct type of friction surface.

Anyone who doubts me can read the Jack's Transmissions link and see for themselves.

The only Toyota/Mitsu/Getrag syncro parts you have are the 1-2 rings, which come from the V160 trans in the MKIV Supra turbo.