WTF?

[bill302]

1= 2.87C
5= 3.27C
7= 3.07C
A= 3.08L
B= 2.47C
F=3.45C
K= 3.55L
ME= 3.27L
VM= 2.73L
Y= 3.08C
2= 3.55C
6= 3.73C
7= 8 2.73C
A= 3.63C
BM= 2.73L
E= 3.27L
HZ= 3.08L
LE= 3.27L
R= 3.45R
W= 3.73L
Z= 3.08L
4= 3.42C
68= 2.73C
8= 2.73C
AM= 2.73L
C= 3.27L
EZ= 3.08L
J = 3.85C
M= 2.73L
SE= 3.27L
X5= 3.27C
Z5= 3.27C

look at your vehicle certification label under where it says TR and match the 1st and/or 2nd number or letter where applicable to number or letter above to the left of the gear sizes and thats your gear size if its still stock the l and c to the right of the gear size represents L=limited-slip differential, C=conventional differential.