Obviously I don't have the baddest big block but I'm fairly confident in the studs and factory caps at the rpm mine makes peak power at. It shouldn't ever see 7000 rpm until I put some real heads on it but then I'll make a couple more changes.
Some people call girdles a bandaid but I am thinking if you can save the caps walking and some of the distortion that happens I see nothing wrong with a band aid as I personally can't afford an aftermarket block.