The biggest mistake people make when lowering their cars is to buy SPRINGS alone . with standard shocks the ride is compromised as a standard shock simply isn't up to the job. the reason people jump to the B 14 solution is because it has a more capable SHOCK and that is good for ride quality . Owners with only springs fitted who are happy with the look should just buy a Sport shock and all their problems will be over . The drop on sport springs is normally sensible 40 to 50 mm , lower than this up to 70 mm can only be achieved with a coil over kit , but the ride quality at the lower end of the scale isn't suited to everyone . Lower than 70mm is for the NUTTERs and they can put up with all the associated issues including Kidney trouble. Rule of thumb with Suspension the lower you go the worse the ride, please keep this in mind when being tempted with low low drops on coil overs .
Setting a B14 kit at 40 mm drop will give more comfort , but a sport kit with 40 mm drop will be more comfortable and cheaper .