Warn Overdrive, Which Model? 3329? (cj5 - 1955)

Hi all,
I have the opportunity to purchase an overdrive which the owner is long distance and having difficulty describing other than model 3329. Is this the correct model for a CJ5 - 1955?
"the technician who is restoring the car told me that we needed a 29 tooth"
Thanks for looking.
Other wise if you have one "NOS" to sell my or you know who has it, do not hesitate to contact me
Here you have somme pics of the overdrive we are talking about:

 

WARN ALL RANGE OVERDRIVE FOR SCOUT WILLYS JEEP 3329 UNUSED | eBay

This one.

 

Yes the nos unit on eBay will fit all standard cj’s 1955 through 1971

 

Yes this one.

 

How I can be sure that this one has 29 teeth?

 

If it’s NOS, then no parts have been swapped around.
Model 33 is rear shift .
-29 implies it has 29 tooth bowl gear.
I would have bought this unit myself a few days ago but don’t have paypal.

 

26 tooth is for 1954-1/2 and earlier

 

On any old Jeep, its always best to count the teeth on your bull gear. Lots of things may have been swapped around over the decades.
-Donny

 

X2, it's easy to pull the rear cover on the transfer case & count teeth.

 

Yep just might save you a thousand bucks...

 

Did not that change also correspond to the change from a 1 1/8 to 1 1/4" diameter intermediate shaft?

 

Yes John.
I did a write up over here detailing a lot of what I know about Dana Jeep transfer cases.
Transfer Case Progression

 

Thanks guys. I finally bougth the overdrive...

 

Smart move....