Mini Tub Question: What to do about the Outer Wheelwells?

[Mrfixit]

I'm installing the DSE minitubs in my 68 Camaro. I want to be able to lower the car for show days so that the top of the tire is at or just above the fender lip. I'm concerned about tire rub on the top of the outer wheelwells so I'm wondering if anyone has successfully modified the stock outer wheelwells to gain more clearance? I realize that the body line will not allow the tire to be too close to the edge but it looks like I could move inward about an inch and, by modifing the roof of the wheelwell gain significant clearance. Is the work worth the effort?

Thanks for all the info so far.