what LSD to go with?

[dpstang98gt]

its an 04 ranger xlt 4x4 ex cab. does my ranger come with a rear LSD? i tested it and only one wheel spun so its either broke or was not equipped with one! what would be a good LSD to go with? i do mostly road driving but do like to go offroading every once in awhile. Also my ranger comes with a 28 spline axle and 4.10 gears right?

 

[4x4junkie]

Yes, all XLT Rangers came with a 28 spline rear axle.

As for what gears and if L/S, you should check here:
http://www.therangerstation.com/tech_library/Axles.html