How competent are you with engine work? I did it on 2 OM603 engines. Removed the oil pan and pushed the pistons out. You need to lift the engine a bit to remove the pan. Honed the cylinders and put everything back together. I reused the compression rings but not the oil rings. The oil rings will break when you push then out. I bought the oils individually on eBay. Soaked the pistons to get rid of all the carbon. It is a lot of work but I rehabitated 2 engines.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.