All models were originally fitted with Boge self-levelling units at the rear, except 2300 and 2000 models which were equipped with conventional shock absorbers. Vitesse's were fitted with 20% uprated self-levellers and were lowered by 1 inch, whilst VDP EFi models were uprated 20% but retained standard ride height. Self-levellers can be identified by the rubber gaiter at the base of the unit. The springs which accompany self-levellers are very soft and therefore cannot be retained if conventional shock absorbers(Standard, Spax or Koni) are to be fitted. All versions can be fitted with conventional shock absorbers provided the correct springs are also fitted. Please refer to ' Rear Springs' for the correct Springs to be used with a conventional shock absorber conversion for NON 2300 and 2000 models.