What would you do, 340 Dart?

Yea price is important, I would prefer to stay with MOPAR parts however not if it is going to be double the money. My car has a 273 gear and i am changing to a 411 I have 17 in wheels. I am afraid the 7.25 wont hold up. I will drive very conservative just haven't heard alot of good things about the 7.25 and trying to plan for thr future.