I have a delta 40 series flow master and a glass pack where the res use to be and I love the sound. real deep at low rpms then it gets guite as the motor revs or at the the intake is louder. Hope this helps

Eric
99 SE MTX
Flowmaster muffler, no Res, Weapon r filter, 80mm mustang mas, Air/fuel guage, oil pressure guage
2 pod guage pod, B&M shifter, Hyper white bulbs, white front corner lights, Mobil 5w-30 syn,
K&N oil filter, Air/Fuel optimizer
SVT throttle body real soon!
14.7 @ 92 Best time
15.2 @ 93 Best MPH