7260 big enough???

I've been using the 7260 joints for years on my race only Dart. I've been 11-teens @ 117 with a best 1.46 60'.....BUT.....I use solid Spicer u-joints, custom driveshaft, a steel billet yoke with u-bolts and an auto trans (footbraking). I tend to be over-cautious & would keep a very close eye on the 8 3/4" with a 4 speed if you hammer on it.