Hi, it's Rob here. Originally HZ (RTS) had 3 dimples on the outside (flange end) of the rear bush and 3 dimples on the other end (non flange end) of the front bush which means the dimples were always facing towards the rear of the car. Over the years the bushes have become rationalized, that means 'one-size-fits-all', (depending on the manufacturer), because the outside dimentions are all the same. If you look closely at the sleeve in the centre of the bush there three different diameters meaning, thicker sleeve, less rubber, all to do with RTS. If you've got dimples on the flange end I'd put them in the rear of the wishbone.