Rear end choices (modified).

Forgive me if this has been asked a million times.

I need a stout rear end for my 72 A body Dart.

It has a 7.25 that won't last one hard launch.

I could try to source a 8.75 A body sure grip, and it will cost a grip O money..

I'm going to move the springs inboard to fit wider tires. It makes no sense to pay thru the nose for an original just to modify it.

What rear end is going to be the most economical and be stout enough to handle hard launches?

So many choices.

Dana 60?
8.25 mopar?
8.8 Ford?

I need to get a rear end under this thing ASAP. 411.