steering box advise please

i need advise again im afraid , its a 1990 defender 90 and i have a leak on my steering box, its a 4 bolt fitting and on the top there are six bolts were the bleed nipple is, the other one i need to fit is a 4 bolt but it only has 4 bolts at the top were the bleed nipple is, my question is will it fit or have i got the wrong box, i hope that made sense
regards

No it don't make much sense!

Are you trying to change the whole box or what?
:nopics: