Outer Limits 4x4 Board

I am getting my 1998 4.5 GU converted to dual fuel in a couple of days and was wondering if they take the main tank out or if they take the sub-tank out? If they take the main tank out will the sub-tank's fuel pump still be powerful enough to use?

they take the main tank out and fit the 115L gas tank there.
as for your sub, they should change the man feed line that went to the main tank to the sub tank.

Jes