FYI the SL sported an M104 motor...as I understand, the block is similar to the M103, but the head's completely different. Don't know about the electronics; I'm sure someone who knows will chime in

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo