Looking around at third gens.

Does it say anti spin on the tag in the glove box?

I haven't found one yet that says it on there? Wondering if people are retarded and don't buy it or if its not on that tag?

 

It should say limited slip, antispin or something.

 

Mine says nothing about limited slip on the tag in the glove box. Thats one of the reasons I picked it. I know it has limited slip because it has had two new ones put in. 47,000 miles glad to have warranty.

 

If you are unsure, I can run the VIN for you if you PM me.

 

I believe your 03 should have the gear type clutchless limited slip unit, right? What kind of failures have you been experiencing with it?

 

You might want to take a look at that tag again. All of the axle info is on there including ring gear size (mine is 10.5), gear ratio, and if it is Anti-spin.
Tag code is DSA and states "Anti-spin Differen".

Your sig says 2003 HO 600. No such thing. '03 is a 555 at best.

 

It's on the tag on my '05.

 

Get your vin #, call the dealer and he can print out your "build sheet". On it you will find everything you want to know about your truck and more.