Andy's Viper caliper kit on stock rotors will fit a 15" wheel.
The Viper caliper kit on 13" rotors will fit 17" wheels.

Both kits use front calipers.

http://www.arengineering.com/caliper_menu/calipermenu.html

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon