A new Z06 will be / should be very reliable. So far I've had one problem with the Supra, the crank pulley cracked! I replaced it with a zero balanced "trick" crank pulley from Titan motorsports.
The GSX is pile of smoking shit compared to the Supra. I like them, but my friend and mechanic who owns
www.lr-racing.com makes a living building / rebuilding Talons.
