Whenever you do the 2" lift... replace the rear coils with 2" lift units. That will take care of 2 things at once.
My brother has a BT4 in a 1 ton Chevy 4x4 pickup. It is a
very heavy engine... too heavy for a 4runner. I think it weighs more than the big block that came out.
I just installed a 2" lift with new OME rear coils.