What is my stock differential?

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Jan 17, 2002 | 12:24 PM
  #1  
I have a '90 RS (305) auto. I'm interested in SLP's take off posi, but from doing a search, it sounds like they came in most '89 and up 28 spline axels. Does anyone know for sure? Thank you
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Jan 17, 2002 | 01:40 PM
  #2  
If your setup is stock then the SLP posi will fit your car. However you will have to get a bigger sized ring and pinion (3 series vice 2 series).

What a better time to upgrade to 3:42's!!
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