Question about 1969 Barracuda

Hey Colton, WELCOME to FABO from SoCal.
Depending on your power/torque output you may not need to step up to a Dana. MaMopar used the 8-3/4 on all performance platforms EXCEPT Hemi/4-speed and all 440 six-pack (auto and 4-speed) engines.
I was thinking of going to a mild built 440 instead of a 383 like the car had originally. But I haven't decided yet. If I decide to go to a higher horsepower application I'll definitely go to a Dana but as of right now it probably won't be anything too crazy