You might post this question on the Hot Rods board as there are a number of 16valve owners who have done this successfully there. The 190E 2.3-16 was lowered relative to the standard sedan versions. If you put shocks and springs from one of those cars in the rear the ride will be altered probably significantly. MB put the self leveling system in the car to make the aerodynamic effects work at all load conditions the car was designed for, which will not be the case if the rear is an inch higher than the front.
Why not just fix the stuff that is there? Mine has been relatively trouble free - one rear shock replacement cycle - in 16 years and 200,000 miles. Mine failed due to a mounting block made of aluminum, and the whole strut on each side had to be replaced - you could not order just the aluminum block. But replacing the two shocks is likely to be less than ripping it all out and putting something else in there. Good luck, Jim
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)