I’ve decided to put my Busa back together. Since I crushed my slip-ons I think I’ll go to a four into one system. I know there has been a lot of talk about the different 4 into one’s but I didn’t really read many of the posts. I was hoping for some suggestions. If you have any information please post it concerning weight saving and Hp increases. I have a power commander so the re mapping is no problem. Also I need to replace the windscreen, so I could use some help with that also.