Adrianr447

Ok, so the engine I replaced in my '02 GS430, is out of an '01 LS430, and the power steering pumps are different. For some reason the GS power steering pump doesn't fit, so I'm running the LS pump, but it does not have the vacuum sensor on it and is a much smaller unit. Can anyone guide me on how to swap and fit the GS pump? Would I be able to use the '01 GS400/430 pump? Long block/ short block differences? Do I need to move studs, or completely swap timing belt components for '02 stuff?