Here is a site that has the directions listed. Not muching new happening to the site recently, but it has a nice collection of knowledge for off-road Mercedes SUVs (M-class and G-class)
http://4x4abc.com/ML320/ml320_torsion.html

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Chirag (Charlie) Patel

- 99 Mercedes-Benz ML 430 V8 w/custom TVs, HI-Fi VCP, Tuner, played throughout BOSE speaker system
- 93 190E 2.6 (4-sale) w/ an amp, equalizer, and CD-changer, integrated w/ stock stereo and integrated cellular phone speaker system, 400E brake upgrade, 16" 8-hole replica wheels, KYB, and lowest pad height, K&N
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- 4 Sale, 4 16x7 7-Spoke SLK Wheels and 2 16x8 7-Spoke SLK wheels (look like the Evo II, except 7-spokes)