i did a fuel pump installs on a few r32's and have realised that the 044 fuel pump with an earls fitting on the end of it seems like it was purposely fabricated for the r32 fuel tank and bracket. i mounted it on the standard bracket with no dramas at all, and sat around 5-7mm from the bottom of the tank.
this is what it looked like after getting it on, but this was on a gts-t, im not sure if its the same on a gtr: