Probably an obvious question, but I can't find the answer anywhere

[jg09]

What front diff do I have in my 1991 4x4?! For some reason, I cannot find the answer.

 

[Willard]

27 spline Dana 35 TTB. For information like that in the future, go here

 

[jg09]

Hey, thanks. My next question was going to be about spline count. So with the TTB front end, can I run any aftermarket diff that's made for a 27 spline D35?

 

[jg09]

The spec sheet is REALLY awesome to have, but it doesn't list rear diff spline count. Is it a 27 also? I've heard somewhere that they are a 29 spline diff, but I can't remember where I saw/heard that...