Not a lot at this point.
The TRD supercharger kits have always been rare so unless you can find one already on a car, your chances of finding one at all are slim.
Monkeywrench Racing still shows a turbo kit in their catalog but it starts at $2900 and goes up considerably depending on options.
https://www.monkeywrenchracing.com/prod ... 08-1zz-fe/
I have purchased small parts from MWR and the products were of good quality and they shipped quickly.
I have no idea how the AWD system would hold up to extra HP.
The only other option would be to cobble the pieces together on your own.