Catalytic converter from 2007 Infinity G35. Also should fit Nissan 350z.

I'd Like to Know:

I'd like to know what this is, what it goes to, who made and manufactured it. Thanks

Item History: N/A

Size: It is 20-1/4" in overall length. There are two bolt by bolt measurements on both ends, one is 3-7/8" and the other is 4-1/4" x 3-1/4".

Markings: None