8.75 durability for big block street/ Strip

For the what it is worth section I am making right at 630HP at crank with 3000 pound car (All fiberglass clip) spooled 433 gears in a 8 3/4. It has survived my best attempts at destroying it. If I was starting from scratch I would go Dana. But frankly the Spooled 433 fell in my lap so I figured run it till I break it then trade up to the Dana. I am still running it!
PS I run Cal Tracks as well.