Our custom Porsche exhaust systems are built to order.  Prices start at $3500 and vary depending on options.  Choose from high flow cat or off road straight pipe. 304 stainless, 321 stainless, titanium, or inconel.  Equal length long tube headers, double slip fit merge collectors, 20 gauge to 16 gauge.  Our 991 GT3 long tube header exhaust sytem save 69 lbs over the factory exhaust system with power gains up to 35 hp.  Our Turbo S headers are also lighter than stock and have been tested up to 700 all wheel hp on our in house Mustang dyno.