Mounting a multi-purpose base rack system to the 2001 Mercedes Benz ML 320 roof rack siderails (the two bars that run parallel from the front to back of your roof top) is necessary. The
Yakima Lowrider car rack system fits your siderails perfectly and is easy to install. The Lowrider system includes four Lowrider Towers that clamp onto the side rails and also a pair of crossbars that connect to the four Lowrider Towers. You can then attach the cargo box for carrying your belongings to the 2 crossbars. Remember that you'll need to go with the 58 inch cross bars because this is the length necessary to reach across the 2001 mercedes ml320 roof top.
Your best bet is to then get either the
Yakima SkyBox Pro 16s gear box or the
Yakima SkyBox 16s gear box (both gear boxes are the same except the SkyBox Pro series sports a glossy finish and the SkyBox sports a matte finish). The 16s model is perfect for your needs as it has a good shape and cargo capacity for your guitar, clothing and other miscellaneous belongings. These gear boxes will also provide great protection and are also waterproof. They also include locks to lock your gear inside the box.