Ok everyone, I'm sure there has been something posted about quad exhaust disc before. However, I tried something a little different and thought the group might like to hear about it. Instead of removing the plates and installing one plate with a 3/4 inch cutout. I decided to install two plates with 3/4 inch holes offset on the front/back side of the spacer plate. One plate has the hole on top side the other on the bottom side. I also made sure the plate with the hole up top had a small hole (3/16) on the lower side for water to pass through as I noticed some water buildup when I removed the stock plates. This has really improved the sound quality off throttle IMO. Sorry I didn't take any pictures before I installed the plates.
Chris
Chris