If your bumping off the stops... no pun intended- then you are too low to begin with. Sounds like you need lowered front spindles so the geometry stays proper but the car goes lower.
Not necessarily, if the torsion bars have been upgraded then the wheel travel will be much less than stock so the bump stops can be shorter. Drop spindles on these cars don't actually work as well as lowering the whole suspension system and retuning it for lower ride height and stiffer springs, modern alignment for modern tires etc.
