Hi,

Just wondering if an NP435 from a 71 F100 mounted to the dana 21 (two speed case) has the same output shaft as a 1978 Np435 mounted to an NP205 case. I am contemplating swapping the 71 trans into my 78. Thanks

 

same splines, different lengths

 

Thanks for the reply. do you know how hard it is to swap output shafts?