Is there a pilot bushing in the stick crank hub? If so, you would need one in the the automatic's. Are the flywheels balanced as a unit, or to the engine? If they are balanced to the engine, then to do a perfect job, you would have the stick flywheel statically balanced to the automatic's.

I had to deal with these two items when I did a swap on a 280E.

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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