Steering boxes?

quick question? 1991 defender 110
Is there any reason I can't swap my six bolt steering box for 4 bolt ? I'm hoping they're a straight changeover ?
Cheers guys

Yes they are, pipe fittings etc. are the same between 6-bolt and 4-bolt boxes.

However make sure the new box comes with a drop arm as these will not swap over. A new arm from Adwest complete with ball joint is not too expensive, and is the way I went when I swapped mine over.

Thanks retro, think my six bolt is goosed ! Column uj's are good and new steering pump hasn't cured my lack of power steering.
No fluid leaks but the only old part in the system is the box. It just stopped working? Drove fine and next turn of the key nothing.

Are the four bolt boxes better ??

I was told they were stronger than the Gemmer 6-bolt, however whether that's true or not I don't know.

I swapped it because I was chasing a wobbly steering problem that I thought be my old (6-bolt) box. Turned out it wasn't, but never mind.