Quote:
Originally Posted by dorkidori_s13
S15 diffs will fit just fine into any S13/S14 R200 pumpkin, the only concern is the driveshaft length with ABS equipped cars (not sure if S14s had this problem). i know for a fact you can reuse the S13 ring gear bolts on an S15 HLSD (did it on mine). S14 ring gear bolts may be slightly different, but they should work (any S14 guys wanna chime in?)
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The driveshaft length shouldnt matter I would think as you are using the same pumpkin and the same pinion. The ring gear bolts on both the s13 and s14 are a 12mm thread and shank bolt BUT the holes on the s15 diff are 13mm.. Some people use bushings.. some use tape around the bolt shank... some people just put the stock bolts back in as is (they are torqued quite tight) and have had no issues or you can can buy the nismo bolts (PN - 38102-RS500) which are 12mm thread and 13mm shank. 10 bolts are needed IIRC
I bought mine here, best price I could find about 1-2 weeks shipping:
http://www.rhdjapan.com/nismo-differ...gear-bolt.html