Why not a 190E 16v or a 2.6 190E.
As the others said, not really worth it when they made the 2.6, which was quite a quick little car actually. Friends dad had one years back. Though he switched from a 59 190 coupe or sedan, I forget if it had 2 or 4 doors. It did not look like the sl/gullwing att he time, it was a saloon car with colum shifter... looked like the ol 220's.
Alon