This job is a PITA, I've done it before but on a W116. It might help if you can raise the engine some if the steering gear is in the way, or unbolting the steering gear and letting it drop down some.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.