Higher flowing cats?

[Mjc1241]

I do not pretend to know if the stock cats are high flow or not but I did not know these existed:
https://www.summitracing.com/parts/mpe-52225/applications/make/ford/model/mustang?prefilter=1

Sponsored

 

[Mjc1241]

Nevermind. Called Magnaflow and they are not considered a performance upgrade. Disregard. Looking at different options.