I have a gt4 st185 turbo gearbox for sale. Has been rebuild with new synchros under 10'000 kms ago. Drives very smooth.
For the MR2 turbo guys this could be a cheap way to replace the syncros in your worn box as the complete gearsets can be swapped from this one to the mr2 one. Only difference is slightly different gear ratio on 2nd. If I can't sell it this is what I will probably do if my box ever decides to go.
I am located in vic and can possibly deliver around Geelong and Melbourne. Or I'm happy to drop off at any depot. 
If you'd like photos just ask.
Price: Make me a fair offer and I'll be happy.

how much would you do the gearbox, short shifter and radiator for? is the gearbox jdm or oz? could you deliver to Clifton springs?

Matt, does the box come with diff? If so is it LSD?

yes comes with transfer box and diff
I dont think it is lsd, the axles spin opposite ways. 
And where everything else is the same with the MR2 gearbox the diff has different axle sizes to the MR2