Michel / Cliff - Rear is lowered via adjustable trailing arms (these are standard install by Vintage Speedster). I lowered the rear (backing out allen-head bolt pointed out by arrow in pic) just until wheels had a very slight negative camber.
I also had Vintage Speedster install 2" drop spindles on front. The drop spindles add 5/8" additional track width (per side). I further tweaked the ride height via the adjust-a-drop on torsion housing.
To compliment the overall 'lowered' look, I had Vintage Speedster install replica Fuchs (with 5 x 130 Porsche bolt pattern). These cost only a few dollars more than the standard chrome wheels. These wheels are 15" x 5.5" with slight off-set to fit without tires rubbing fender wells. These wheels also fit over disc brakes, which I have at all 4 wheels. I fitted 185x60x15 tires for lower & wider tire. I don't fret over speedometer accuracy, I know when I'm over the speed limit.
The replica Fuchs do not have the proper Porsche paint scheme so I had them re-finished at a wheel shop. Here is a before & after look of these replica Fuchs.
End result is this...