Replying to NS car junkies need some help from ya

so i bought a 99 grand cherokee after getting t-boned real hard in my first car (completely not my falt)

I wanted to do more stuff to it and i ended up straight piping it no cat no muffler.

But i want more of a cleaner sound and want to slap a flowmaster or boral muffler

and im guessing just the stock cat back on will that still give me a good rumble and also

my main question is how do i go about ordering a muffler online like sizes and type stuff like that.