Any ideas for meatier exhausts?

Im currently working on my 71' dart swinger special (slant 6) that my mom left behind and want to make it a bit meatier sounding. Its going to be a cruise car and I want to make sure the car is how she wanted it. Any ideas for exhausts/headers that I could use or any techniques i could do to make it sound louder with good performance? Any advice is appreciated! Thank you!! -Elizabeth :supz: