A ported barrel or choke does make it louder for the shooter and bystanders.
You can do the recoil pad yourself if you have some patience. I have done several for people and they turn out very nice. You can get the "grind to fit" pads from Brownells or Midway and if you choose to do it I can give you the details. you will need a belt sander and a good mitre, band or radial arm saw. I perfer the compound mitre saw.
Or you can just buy a custom fit pad and screw it on.
CPL holder since 1991, NRA Lifetime Member, DU Member, NICET certified
"For those who would give up essential liberty to purchase a little temporary safety, deserve neither Liberty nor safety.—Ben Franklin.”