I have been doing Porsche mods since about 2005 and this is the first I have come across a project like this. Its very normal to hear of a transmission swap in cars like a Nissan 240SX, Subaru STI, and even older generations of the BMW 3 series and 5 series. But doing a Tiptronic to Manual conversion in a Porsche is just something that has not been seen by my eyes. Really its not much different or expensive on a 996 Carrera. This customer of ours from Australia started out with this 2002 Carrera Convertible Tiptronic. Aftering making it stand out with some Fuchs style wheels, KW V3 coilovers, and getting a serious boost from a VF Engineering Supercharger, he started his conversion. The 996 transmission is much cheaper than a 996 Turbo transmission. Obviously you need the corresponding parts such as the clutch, flywheel, master cylinder, pedal, shifter and housing, etc, but once the plumbing is mounted and the parts installed, your there. One thing that does need to be done is the unmarry the TCU from the ECU. Without this, the car thinks it has a tiptronic issue.
The car was run on a Dyno Dynamics dyno and put down 480 horsepower and 354 ft/lbs of torque. The VF Engineering supercharger kit makes about 130hp gain over stock. Now this totally depends on what his baseline test was. On our Mustang Dyno we usually see a stock 996 Turbo make about 340 awhp and a 997 Turbo make about 400 awhp. So this car must have had a higher baseline to end with that result, but what matters is the gain.
End of day, this car has turned out really sweet and we love the little details to keep it up to date with the GT3 style seats, flat bottom steering wheel, and just overall cleanliness.