Installed my 74mm Throttle body today; yes with a new o ring too. Went in really fast and easy with no issues. After doing the throttle reset, took it out for a drive. Runs great, but I am sure it will get even better after I do a retune with Eurocharged. Next order of business is magnacor wires and new plugs. I am also hoping for a good black friday sale this year on at Discount so I can get new Hankooks.