This is a write-up for buying an SEC. Much of it is applicable to the SEL as well.

http://www.mbcoupes.com/buyersguide/buyersguide.htm

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There is a very fine line between "hobby" and "mental illness."
FrankenBenz: '87 560SEC with an '02 cammed LS6 and custom 4L60E.
Bling: '87 560SEC, ported/polished, lowered
Lisa: '87 560SEL, lowered