The updates over and above the Rufus spec are focused on reliability and robustness for track duty and include: oil, transmission, and differential coolers; a Global MX - 5 Cup - spec transmission with beefier third and fourth gears and new case studs; Verus Engineering brake ducts; a Hard
Dog rollbar; and Flyin» Miata's Wilwood Stage 2 Big Brake Kit and Fox Stage 2 suspension kit (improved spring rates, Fox Racing shocks, and FM - specific sway bars).