Is a 7.25 rear strong enough?

I couldn't find an 8 3/4 in 2018-2019 for less than $500 that needed rebuilt and shortened, which is why I settled on a Ford 9 inch. I assume prices and availability are even worse today. So now my Duster is Frankensteined with a Ford rear end and GM Metric Disc brakes and wheels. But so far it's easy to find and get parts.
When I'm dead and gone I imagine whoever ends up with this car is going to have a surprise when they go to do the brakes...The last 8 3/4 I ran across for sale in my Area was $1500 for an open dif and highway geared,stock axels and drums.