Re: Grind my brake calipers?
Yep, you have to grind the top of the calipers and some of the backing plates. As far as whether it's "minor" or not, it kind of depends on your personal opinion though there are a lot of people out there who have done this.....including myself.
The amount of backspacing the wheels have also affects how much grinding is required. I'm using the standard whitespoke type wheel with 4.25" of backspacing and it didn't require that much grinding. Using wheels with less backspacing will require less grinding (such as 3.5").
The biggest possible problem is that your wheel selection in a 15", 8-lug is pretty limited and I have only seen them in steel (aluminum is typically too thick and will cause to much intereference).