I am not looking for a drop in set up, too expensive $$$
I need to find a correct Universal Cat that the shop can weld in. The magnaflow site lists 94007 as a correct fit for 92 400E, however that Cat is a Dual to Single so that could be a mistake...

Looking around further I found another Cat that has been used on a 300E:
http://www.amazon.com/MagnaFlow-38008-Stainless-Universal-Catalytic/dp/B003EOXD4Y/ref=sr_1_10?s=automotive&ie=UTF8&qid=1438105130&vehicle=1992-63-796-20--1-6-7-2214-1530-1-2-2108--1-0&sr=1-10&ymm=1992%3Amercedes-benz%3A400e

or I could run 2 of these:
Amazon.com: Magnaflow 94005 Universal Catalytic Converter (Non CARB compliant): Automotive

Amazon lists both of those as 400E compatible.
Anyone have these on a 400E? or a link to a universal they have installed successfully?
What size is the MB stock on the 400E – 2" or 2.5"?

Thanks,
Luke