15X8 Rallys rub 3" Spindles?

[8t5Silverado]

I know this has been covered many times over, but I always get different remarks from people.

I want to run 3" drop spindles with 15X8 stock Rallys. Will they rub? If you say they don't, then what spindles do you have?

Does the lower control arm rub the wheel or the tire? Can I simply run a wheel spacer to push my wheel out a bit more?

Are there 15X6 or 15X7 stock Rallys that have less backspacing that might work?

I plan on running 225/75-15s for a short time. Eventually I will get 225/70s or 245/60s...

Thanks,
Brandon