I believe the the w126's are like the w123's where the Fuel Tank is right behind the seat as well as a sheetmetal that sperates the cabin from the Fuel Tank and trunk. The only way to get down to the Fuel Tank is through the First Aid Kit hole (at least from inside the Cabin) on top of that there's a panel in the trunk that keeps the stuff in the trunk from hitting the tank. In other words, if your w126 is like my w123 you aren't getting to the trunk from the cabin.
