I'm guessing by your 5 posts you may not have had the opportunity to look at all the info on Pelican. If that's the case, checkout at the very top of the page the section titled Tech Info...it has the symbol of a wrench next to it. Within that section are all the DIY articles Pelican has put together for your car. Will definitely provide good background info before you crawl under.

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'89 260e (212K Mi.), '92 400e (208K Mi.), '92 400e (not a misprint) (146K Mi.), '95 C220, '81 240D--Sold