Spool or Locker?

Application.
Nostalgia SS Barracuda. Mild Race Hemi (compared to todays SS-engines).
4-speed, 4.88 Dana 60. 10,5" slicks and track only.
I have a ´68 B-Body rear end (23 splines) and need to get 35 spline axels.
Would a Spool be the best choice here? It cost less, but other than that?
What do you say?
Thank you for taking the time.