Yomie,
Here's a list of the Axel codes for Explorers, as you see yours is a 3.73 ratio with factory limited slip.
Code Capacity Ratio
43 Open 3200 3.08
41 Open 3200 3.27
42 Open 4.10
46 Open 3.73
45 Open 3200 3.55
D4 Limited Slip 3200 3.73
D2 Limited Slip 4.10
L73 Limited Slip 3.73 -