I'm 6'2'' and just installed the Parts Rack 1'' adjustable lowering kit, and I used washers to adjust the rack. Works great.
I went with the 1'' adjustable rather than the 2'' non-adjustable because if anyone shorter than 6' needed to drive the car they wouldn't be able to. ie. mechanic, tuner, wife..........second thought.
2000 GTS Steel Grey
6 piston Baer claws up front, Front brakes in back, Quaife differential, GKH half shafts,
Alloy fly wheel, Short throw shifter, Polished aluminum intakes, K&N air filters,
Optima battery, Sterling silver ignition key, ACR 5 point harnesses.