The tb42 usually comes with 3.9 diffs check your tag it says trans axel code then hh39 or hg 39 etc so i would think that 4.3 diffs from an rb30 patrol would be ideal for 35,s.
As the td42 comes with 4.1 i left the 4.6 diffs in an they work great with 35,s.
35's are great off road but do have road noise this may vary quite a bit between tread patterns and tyres though.