All the info is right here:
http://www.supramania.com/forums/showthread.php?169656-L33-engine-in-a-92-supra
It is an L33 engine. 5.3L, aluminum block, 799 heads, 02+ Z06 cam, LS6 intake, 28.8lb injectors, all F-body accesories.
I would say the swap was the same difficulty as doing a 1uz...