Hey all,
I appreciate the feedback and just wanted to give an update.
I installed the P1 tips yesterday and they definitely make a difference. I can actually hear the windnoise again now.

Unfortunately, its still a bit too loud for me.
I checked Two Brothers website to look for the P4 tips but found that they, along with the P3's, were only recommended for the off road ATV type use. So I called Two Brothers this morning to ask about them. Two Brothers says that they do not recommend running the P4 nor the P3 on a road vehicle stating that it will cause the packing material to burn up much faster due to the heat build up from back pressure. When I pressed them further, they said that the P4's could be used but would result in higher exhaust maintenance however should give an additional 10DB sound decrease over the P1. They said the P3's should not be used.