That would depend on what you're planning on putting it into. I would say find a 1977 or newer because the housings were stronger with the broader center section however this could pose certain problems depending on how much offset you plan to run, suspension configuration, oil pan clearance, etc.

 

i have all of my fitment issues well in hand. i just don't know where to find the nine inch third that i need to run a 35 spline arb.
it will most likely be like every thing else, what i need or want is exactly what everyone else needs or wants and there are none out there.:shaking:

i guess i must have posted this in the wrong forum. i did search and didn't really find what i was looking for. so i guess i will have to brave the waters of general and bump down some of the give away threads:laughing:

 

i have all of my fitment issues well in hand. i just don't know where to find the nine inch third that i need to run a 35 spline arb.
it will most likely be like every thing else, what i need or want is exactly what everyone else needs or wants and there are none out there.:shaking:

i guess i must have posted this in the wrong forum. i did search and didn't really find what i was looking for. so i guess i will have to brave the waters of general and bump down some of the give away threads:laughing:

Sorry, I thought you were talking housing. The only options that you have for 35 spline axle shafts are going to be aftermarket 3rd members. You'll need to have the 3.250" carrier bearings which Ford never offered.

The only way you can squeeze 35 spline shafts into a 3.063" bearing 3rd member is to run one of the spools designed for it...and it is my understanding that they are rather thin and geared more towards drag racers but I've never run one.