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911 1970 Suspension mods

Suspension

Vehicle Information: Model: 911T; Year: 1970; Body Type: Coupe; Engine (type, size, modifications): 2.2, ; Total Mileage: 128K;

I purchased this car wiht 15x7 iinch rear wheels, the tire size escapes me right now. The previous owner raised the car to allow access for clearance with the larger tires. The tires are within the wheel well. I weigh about 140 lbs. The shocks are Koni adjustables, but I'm not sure what setting they are on. I'm not planning on tracking this car, yet. I use it pretty hard on the country roads around my house for track practice, but for the most part, it is a road car.When my friend drove the car with he and I in it, he weighs 200+ lbs, we got alot of tire rubbing inside the fenders, up past the lip. I don't want to raise the car any higher because of raising the center of gravity. If I go with stiffer torsion bars and a stiffer setting on the shocks, should that do it? Shall I also go with a larger anti-sway bar? I think the bushings are all original also and should probably be changed.I track a 1988 Jaguar XJ-S. It has a a trailing arm rear end suspension. On that car, it is best not to have a rear sway bar, but have stiff springs, and the shocks set to a softer than front setting. This helps keep the tires on the track while doing hard cornering. Is it the same for a Porsche with the rear engine? Or does the rear need to be stiffer than my Porsche.

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