throt:
Gnil:
Whoopsy:

All GT cars destined for everywhere except North American are factory provisioned for roll cages. You can either order strict from the factory or afterwards. The body in white is reinforced in the right places for roll cages.

That  is not true anymore since the 991. My brother bought a GT3 991.2 that came factory without the sport club option ( no roll cage ) . He wanted to retrofit the roll cage. Answer from Porsche/Manthey  was that it is not possible as the non sport club chassis is different . It is the chassis from the Carrera without the reinforcement points. Only the club sport option (with cage from the original order )  come with the Cup reinforced chassis 


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 964 Carrera 4 --  997.2 C2S , -20mm -- 991.2 GT3 RS 

 

I never knew that, Gnil, obviously Smiley

So, it’s not just the cage that will make the car feel stiffer, it’s the actual CS chassis too?

 

No stiffness difference, I think  . Only the reinforcement points are different. 


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 964 Carrera 4 --  997.2 C2S , -20mm -- 991.2 GT3 RS