Porsche

GT = Grand Touring
GTS =  Porsche Badge that is not limited to the 911 Carrera. The 911 GTS is by no means a tarted up 911. It has a top speed of 193 MPH. 
It also lops off 6/10 of a second (3.2 vs 3.8) in the standard 0-60 MPH benchmark as compared to a standard 911 (both with the Sport Chrono PKG). That difference is well beyond substantial. As far as tarting a car up goes: 94 more HP and 91 more foot pounds of torque is in the neighborhood of a 25% increase when combining the two increases into a single stat.

All that said: let’s not lose sight of the fact that a GT3 barely out performs the GTS, and does so only in place. For instance: the 2 cars share the exact same 0-60 MPH times with the GT3 gaining only 6 MPH in top track speed (199 vs 193 MPH). It must be that whopping 23 more HP the GT3 has over the GTS? 
All changes aside, and as extensive as they may be, calling the GT3 a tarted up GTS rings much truer than calling a GTS a tarted up 911, when considering performance alone. The fact remains, Porsche builds the GT3 to go racing, and it’s a bonafide race car with its built-in roll cage and other mandated race features that qualify it to be raced in the GT3 class by Porsche and other race teams. You can now get them with Touring packages for those that don’t plan on running them at the track (it does away with the giant swan tail- as they currently call it). 

As far as tarting a car up goes: 94 more HP and 91 more foot pounds of torque is in the neighborhood of a 25% increase when combining the two increases into a single stat

Technically one cannot combine those two into a single statistic.

The power is a consequence of torque happening through a rotational distance, or a force through a distance.

It would be analogous to saying we get V*A, when V is related to A via a derivative, and A is related to V integral. They express the same thing and mirror each other…

And hence… this post will likely come across as a third derivative post.

GT = Grand Touring
GTS = Porsche Badge that is not limited to the 911 Carrera. The 911 GTS is by no means a tarted up 911. It has a top speed of 193 MPH.
It also lops off 6/10 of a second (3.2 vs 3.8) in the standard 0-60 MPH benchmark as compared to a standard 911 (both with the Sport Chrono PKG). That difference is well beyond substantial. As far as tarting a car up goes: 94 more HP and 91 more foot pounds of torque is in the neighborhood of a 25% increase when combining the two increases into a single stat.

All that said: let’s not lose sight of the fact that a GT3 barely out performs the GTS, and does so only in place. For instance: the 2 cars share the exact same 0-60 MPH times with the GT3 gaining only 6 MPH in top track speed (199 vs 193 MPH). It must be that whopping 23 more HP the GT3 has over the GTS?
All changes aside, and as extensive as they may be, calling the GT3 a tarted up GTS rings much truer than calling a GTS a tarted up 911, when considering performance alone. The fact remains, Porsche builds the GT3 to go racing, and it’s a bonafide race car with its built-in roll cage and other mandated race features that qualify it to be raced in the GT3 class by Porsche and other race teams. You can now get them with Touring packages for those that don’t plan on running them at the track (it does away with the giant swan tail- as they currently call it).

sorry but so much of this is incorrect... factually and in use... the poster seems to have an interest in these cars but is inexperienced and just mistaken about the history leading to the present of the 911 and its variants

Sorry my bad, X51. Other than that everything else is spot on. Point being it is just another option, a power kit, that can be ordered on any Carrera S. In sharp contrast to the GT3 which uses a completely different engine.

I do not for one second expect those who don't know Porsche to get one word of this. Can't get DBA, MTM, etc how ya gonna get GTS, GT3? You are not. You will always think it is hp and other numbers equally as irrelevant as wpc. As it has been so shall it ever be.

https://www.youtube.com/watch?v=sOE9mNe5c7M