I have the suplex set up on the front lf my plus 4 and sourced matching bilstein shockers for the rear so i have bilstein all round. The standard rear leaf spring set up on the back much improved the ride quality after i gave the rear springs a severe lubricating. It took a while and a few hundred miles to achieve the improvement. Lubricating the rear springs was something that i overlooked, the cars clearly leave the factory un-lubricated. I can actually feel the increase in compliance when i did a before and after press on the rear end to check the bouncability. I think ive gone as far as i am prepared to in order to improve things in this department apart increasing the tyre profile when new rubber is due.
