The 300E 5-speed is in fact a Getrag. I think the same unit was used in the 190's, and later euro 107's and 123's, so there are a fair number. Converting an existing car would be satisfying but expensive. A key thing to know is if the flywheel hub in an automatic engine would take a pilot bushing.

Concur with LB's comments. My 300E was a blast to drive.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe