Thats insanity that the cams lose you 50 ft/lbs of torque at 3.5k rpms. Almost seems like the cams are defective, and at the very least adjustable cam gears is absolutely mandatory.
Thanks for the link.
Antihero
Putting AMS garbage, and $500 ebay wheels on a Z is like dressing a Victorias Secret model in a Walmart dress and Payless shoes. You're embarrassing yourself.