Ok, firstly, there is nothing special about Magnaflow cats. They are ordinary Carsound brand cats with a Magnaflow label slapped on. They have the same cell densities that everyone else uses (400 cells per inch) and the same cross section that everyone else uses. Our cat matches the flow performance of a comparable Magnaflow. Here is the link to our unit.
Item Details
This part will bolt into the factory system with no special modifications, and can be used with both 2.5" and 3" catback systems.