lower ride

I was wondering how i could lower my 70 911 about 1 1/2 to 2 inches. what can i use to lower but maintain proper/better handling?
Coil-overs? HOw would i do this?

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Lowering the front is easy, look at the rear of the torsion bar end caps their are 10mm bolts that you turn to lower or raise the front end.It needs to be done on a level surface with the wheels on the ground and a full tank , after adjusting the screws a few turns bounce the front end and measure each side to make sure height is equal