Is this right?

[Rangerswd]

I have a dynomax cat back exhaust 39315 and a Flowmaster 2029144 cat question is did i get the right thing? Thinking of replacing the y pipe and headers in the future. Noise is not an issue to me just want a better performer.

 

[Blmpkn]

Year of truck and engine size?

 

[Rangerswd]

03 4.0l

 

[Dirtman]

You really won't gain any power. The factory exhaust is not that restrictive. If you go with headers keep in mind the oem manifolds are made for efficient mid range power, aftermarket headers are usually tuned for low end or high end power so there's always a trade off at some point.

 

[Blmpkn]

Looks like the part numbers mentioned should fit.

 

[Rangerswd]

ok thanks for the input.