My shop got a couple of these for my car a couple of months ago. They were not expensive.

http://www.catco-converter.com/

I think they were made in Asia somewhere but are not OE but were ok on a true AMG dual exhaust system

__________________
1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)