I'm considering buying a 99 dakota sport 5.2...

im wondering are the diffs in it posi/limited slip?

 

The 2 gear ratios available were 3.55 and 3.91. Both were available with or without the "suregrip" option (posi)

 

ok thanks, im not sure what this one has, but hopefully it does, i test drove it and it seems like it has 3.55

it is prettyhigh off the ground and has mud tires on it, and a full custom exhaust (loud enough that you have to raise your voice to talk at idle with the windows down) and only has 50 000miles

 

Look on the sticker inside the glove box. It should tell you gear ratio and what option codes were installed, including DSA which iirc is the limited slip.