Larini sport cats 4.2/4.7 gran turismo and 4.2/4.7 quattroporte
Got a set of Larini sport cats that I just took off the gran turismo before I sold it. Used them for about a year, and 2500 miles. Sounds excellent and adds 18hp, 22 ft/lbs torque. New they are $2150 on formula dynamics, $1250 with free shipping in the USA.