u/Curious-Bed-5038

so I.m trying to convert a MS 3 ton Bedford to 4x4 but have had serious problems finding a diff ratio to work with original rear diff which is 6.2 to 1 but I can get a 3.45 to 1 gear set to put in. however then I can’t find a 3.45 front only a 3.55 from a ford.

any help appreciated.