Which high flow cats to get

[JPrime]

I'm new to the modding game so excuse my ignorance.

I have just purchased some Raptor headers for my 3.0 and want to install them along with some 200cel metallic hi flow cats.

It seems like a few people on the forum have the X Force cats but I was wondering which ones to get (as in inlet size, body diameter, body length).

Also, where is the best place to get them? (I'm in SA)

Any help would be greatly appreciated.