I agree a single 16G will not be of great use on a 3.8, now two of them will howl.
I would not run less than two TD04H-13G-6 turbos based on 3K parts. They will spool below 2K and pull to the rev limit and provide full torque from 2200 to 4500 or so. Probably be falling off from 5K or so, fine for a truck.

Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.