koni rear adjustables: how so?
 

I have a stock 1971 1302. My plan includes lowering the front 1½-2 inches, and the rear 0-½ inch. I am planning to buy front and rear disc brakes drilled to a 5x100 pattern, a strut tower bar, front and rear anti-sway bars, a flip-it bump steer kit, caster fix bushings from TopLine. I have 16x6½-et42 wheels which will have 205/55-16 tires.

The Kerscher struts I am leaning towards buying come with Koni rear adjustable shock absorbers. Will these adjust the lowering of the rear -- say one-half inch?

No they will not lower the rear, adjustable means you can set the hardness (rebound, compression). Unless they are coil overs und you get rid of the torsion bars.