rear gear type determination needed

[DredTT]

I need quick info on this used F250 XLT 2wd 7.3 LITER DIESEL.

I need the fastest way to determine if it has traction loc or not. I think it has 3.73 ratio and I need to pull a trailer up to 8000 lbs with conventional rear hitch or 5th wheel already on truck.

Tried an online vin decoder, but no help. It was just listed as an option on this model.

Thanks in advance for any help.

[strokin95style]

look at the tag on the rear axle, 3:L73 is 3:73 with trac lock. (L for limited slip). 4:L10 is 4:10's with a trac lok