[DFWX]

OK, more...
Image sells cars. "GT" and "Z" are two well recognized designations in the USA. All "Z" cars are 2+2 fastbacks. Few actually know what GT stands for, other than something about performance rather than grand touring.
Porsche could declare it is entering the "Z" car market, dropping its Cayenne low and putting on a highly stylized, somewhat more conservative late 90s GT1 look. A 3,200 to 3,400 pound 2+2 fastback
with 450 horsepower and V- torque, though it would be wise to go at least 5.0 to outdo the Americans and then over 500 horsepower along with all wheel drive (though maybe that an optional model).
Thus, it would be the 948 GTZ.
Porsche could claim, accurately, that it was the fastest "Z" car in world history and faster than such as Nissan turbo Zs, the latest non-turbo Ferrari and essentially everything else such as BMW, Viper, Vette on the road.
Where it can not sell its Cayenne for $100K, that would sell in the over $125K but under $150K market, for which it would have techno and stylized interior, but not leather, and would carry a couple extra hundred pounds of steel in the mid-section for cost savings and weight.
Of course, Porsche could offer aftermarket kits of all kinds for this.