i think the vlsd’s might be the same between s13’s and s14’s, except for the rear cover. if so, the snout is longer than the open diff version due to the abs sensor. checking the nissan parts catalog, it pulls different numbers for the r200 and r200v shafts, so that sounds about right.
im pretty sure ive seen people run r200 shafts with the vlsd though, so apparently its not an issue.