I could be wrong but doesn't somebody make some billet/pollyurethane rear bump stops for the f body that's already clearanced for larger n wider wheels?

 

The problem with wide wheels/tires is due to BOTH the bump stop metal and the body sheet metal that it bolts to. You have to grind away both, not just the bump stops themselves.

 

Oh ok thanks. I still have salad shooters for now but my bump stops are GONE so I was gonna replace them with those for future reference

 

Just get a set of ES #9.9137, about $20. All you need to do to mount them is either cut off the lip the fits into the factory bumpstop grove, or slightly trim down the ES bumpstops to fit around the lip.
You should be able to get them at a local auto part store, that carries ES products.