Ill give you about how much mine cost
JDM VH45DE $761
Z32 Transmission $230
Harness $50
Z1 Clutch kit and lightweight flywheel $794 (totally worth it !)

SPL Bronze Shifter Bushing $26.10
Mishimoto Rad plus 16" fan $150 (craigslist used)
Mount Kit Xcessive $432.25
Adapter Plate Xcessive $397.10
Walbro 255lph Pump $110
Shifter Relocation $140.13
Parts Car $400 dollars how lucky you are on how many parts you can use
BTW q45 Diff swap is hard unless you can get an axle from a tt easy. So add up everything and you still got quite a bit more to go.