'96 Toyota T100 Reg Cab
 

im trying to put two 12's in but have no idea where i should put it
anyone with a t100 have nay ideas specifically someone who has a 96 t100 so they know what im looking at and can have a valid input

Slim boxes are all I can think of.

Either raise your seats so they fit under, or put behind your seats.

Not a lot of options here. 6.5 are about the largest that fit flush in your doors.

Might be able to put one on your passenger floor board, but no way two.

You found maybe fit them in the rear floor if you didn't run seats