I contacted Wilwood to ask about 15" wheel-friendly options. They said that they didn't have any but directed me to TCE Performance Products (www.tceperformanceproducts.com). I emailed them and 7 minutes later I got a response: 11.8" x 1" rotors with 4 pot DPR calipers. In 2016 it went for $1350 + shipping with grey calipers and slotted rotors (I think, maybe the slotted rotors were extra).
Take a look at their site - they seem to know a thing or two about brakes.
Take a look at their site - they seem to know a thing or two about brakes.