****EDIT: from what I've just read it's a LEGACY R-160.
Sorry I couldnt find any info on whether or not this is a R180 but you could look through the link below
for some help or just ask Stace tomorrow.
4.11 open rear diff part# 27011AA111
NON-LSD units have the following Subaru part numbers (look at the foil sticker for part number and ratio):
7220 11010: 3.70 ratio
7220 11011: 3.70 ratio
7220 11012: 3.70 ratio
6220 06020: 3.90 ratio
6220 06021: 3.90 ratio
6220 06022: 3.90 ratio
27011 AA151: 3.90 ratio
27011 AA040: 4.11 ratio
27011 AA110: 4.11 ratio
27011 AA111: 4.11 ratio
http://www.legacycentral.org/library...9;s%20an%20LSD
