I would guess that turbo is a t3 45trim here is a flow map.
As that's the most common one for that housing.
Its about the same size as a stock Turbo(12a)
T3 .42ar 45 trim

1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.