Does anyone have recommendations for upgrading syncro gears. I have broke two (between 3 and 4th) within the last year. As I understand they are made of brass and certainly in my case are not very durable. Additional information may help: have a B&W shifter (still very stiff and considering returning to stock) with engine and driveline mods resulting in 413 rwhp. Also have 20 and 19 inch wheels with 335 and 295 tires. Brembo brakes with Penske DA and Hotchkis sway bar kit.