Okay, this has probably been done to death on here but what do you all consider to be the best catback for an '05 F150 5.4 XL Regular cab with the 8 foot bed?

All I seem to see is systems for the 5.5 and 6.5 bed.

I'd like something with a low rumble until you kick her in the ****...

Also...what about voidance of warranty for installing catback?

Thanks...

 

Hello?

 

Flowmaster 40 series