Ddgonzal - sorry, but I wasn't referring to a threaded adjustable lower spring platform, I was referring to a 'base height' adjustable kit. You cut your standard strut tube down to about 2" long and weld on an internally threaded sleeve. The fully threaded coilover shock unit then screws into the sleeve, and a lock ring secures it in place at the desired height. The coilover shock unit also features a conventional adjustable spring platform further up the body - this allows for independent spring pre-load and ride height settings. Google 'base height adjustable coilovers' for more info - they are a great idea. The problem with conventional coilovers is if you set your car up on corner weight scales, the passenger side will be lighter, so you jack the weight from side to side side/front to back/diagonal etc to correct it - except then the spring pre-load is uneven and so too is the droop characteristics. Base height adjustables offer the solution here as ride height and spring pre-load are independent set.