Some of the older MB's had internal balanced engines but on these engines the engine has EXTERNAL balance so flywheel exchange isn't as noted. Also engine is Crank fired & flywheel can only go on in 1 position, otherwise it won't start.
I know of at least 10 190E's that have been converted, but remember that you need a lot of parts & time to swap.
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. Shopforeman
190E 2.3 ITS RACECAR
1986 190E 16V