Pastor Freeman

I drilled the stock pipe which improved the sound but I am wondering if the cobra slip on will be louder? I am tempted to go for something like the Hard Krome 3" drag pipes but if the cobra slip on is much louder than the drilled stock then I would settle for this. I am also worried that a slip on or complete exhaust might be too harsh and metallic sounding? I want a low deep rumble sound Any advice?