489 vs. 741

I've been beatin the crap out of my small pinion for years. While it has not seen slicks or super stick conditions, it's been a good 15 years with it and some decent pumped up small block power.

Side steppin the clutch @ 7 G hasn't hurt it yet.
I've got A 741 going in my car ,isn't it still a good up grade from 8 1/4 ,or should I keep the 8 1/4?