Removing weight can have amazing results. Back in college when I was hopping up a VW bug I stripped off bumpers, running boards and all the seats but mine. The car accelerated better, cornered better and stopped better. Those last two results never come when you just boost horsepower.
Incidentally it is something
Porsche exploits from time to time
With airplane design there is a saying "Sweat the ounces and the pounds take care of themselves".
I've pondered something similar, but more extensive to my car. The A/C system is hideously heavy and the condensers block airflow to the radiator (they certainly don't help, other than possibly serving as expensive stone guards).
Toss the A/C system for probably 40+ pounds, then remove: Old sound insulation, the top, the stereo and speakers.
Install lightweight exhaust, wheels and tires, smaller battery, lightweight seats.
Basically RS the crap out of it. You could call it, oh I don't know: A
sports car. If I want civilized I'll climb in the Touareg.