I have a 1991 z28 Camaro that has no cats and a flowmaster muffler and fourthgen camaro tips. I was wondering what headers to go with and the size. I am optimally looking for the car to be loud under load and stock or slightly louder at idle, neighbors may cry about noise. Even suggestions for muffler or cat-back system is good as well.

 

Hooker 2055s or the Hedman shortys will both work great for you. I recommend the hooker 2055s because of th y pipe that comes with them is 2.5 off each header into a 3" outlet. Then choose the 3" catback system that you like the sound of the most, and you're all set If you are not running a cat, you will need a section of 3" pipe to connect the catback to the y pipe. The set up on my 91 is hooker 2055s, 3" dynomax catback, but I replaced the muffler and tail pipes with a hooker aerochamber with a single 3" outlet on the drivers side and a hide-a-way tail pipe. sounds awesome