Late R180 (K) into 260z ?

[aegean]

Some of you may have seen my post where I was looking for a diff for my '74 260z 2 + 2 auto. On the assumption that mine should have been a R180 3.54, I purchased another diff that came out of an '81 280z, with the "K" marking. Turns out the old diff in mine is a R200 with 3.92, and the diff I have bought is an R180 3.54, but with the CV joint style attachment.

 

Question - can I fit this diff by finding a couple of half shafts from a 280 ? Will there be a problem with the length of the half shafts - too short, too long ?

 

Should I just resell the R180 and look for a R200 centre to replace mine ? If I go back to what should have been an R180, I will then need to get the half shafts as well, as I presume the length is different than the ones I have for the R200.

[Riceburner]

I run a later model "k" r180 from a Nissan gazelle. These had cv's also, the diff centre is 115mm instead of the early style 110mm. I sourced a new torsen LSD and fitted old r180 bolt in flanges, then just ran the standard half shafts. Standard half shafts will fit, it's the output flanges from the diff that will be the hard part. I think they may have a different spline count to standard Datsun ones....