Stock Dana or built 8 3/4

OK, I am still beating this dead horse!:D Which is stronger? A stock Dana or a Built 8 3/4. This is what I plan for the 8 3/4: back brace,35 spline axles w/spool,crush sleeve,7290 u joints. 65 Coronet 3400lbs(could B lighter),500ci w/650hp est ET 10.30-10.60. Both will cost about the same to get. The up side is that if I go with the dana I can always upgrade it but the downside it that it will rob HP. I wont have money to uprade it for a long time so which one should I go with for now.
Author: wedge5