The Roll Center Height affects the lever arm length causing cornering roll.
The only things that you can sortta easily adjust that affect roll center height are
ride height
spindle height
The effect of lowering on RCH is illustrated here, an eyeball metric is the angle of the A-arm, the more down slope the higher the RC, the shorter the RC arm A, the less roll, it's just like using a stiffer t-bar w/o the bad side effects
The other separate but related thing to watch is the steering rack and steering arm heights
2 ways to adjust the steering arm height
rack spacer (RS)
adjustable steering knuckle
this table shows the relationship between using a notional 10mm rack spacer(actual thickness is more like 11.5mm) and ride height, ideally to retain stock steering geometry the sum should be ~110+/-, an adjustable steering knuckle is only needed if the car is lowered to RSR height, ~160mm.
