So here's the deal. The testing I did applies to banshees that are built for low-mid power. Your current setup with fatty's hardly makes it a trails or woods bike. The fatty with a stock port motor renders a redline of around 9,200-9,500 rpm range. My test results were done on a low-mid ported 350 with pro circuits. My redline is 8,700 rpm. Test results for an even higher revving motor would be an even bigger than a 4.75hp increase in topend. Topend is not 5th or 6th gear pinned. Its the high rpm of your motor in any gear period. I climb a lot of holes and ride a lot of trails with technical hill climbs out in the dunes of the Oregon coast. I have situations where I will take off from a 6 foot long strip of sand up a hill, dodge trees, climb over a log and manuever around corners. This demands a decent amount of low end power to get back on the throttle after maneuvering around an obstacle and having to let off. You can be on the topend in 1st gear, as well as in 6th gear. So yes this test applies even to you. It is very hard to convey to someone hp and torque numbers as they relate to the actual power a bike will make off the dyno. As well as what different gains in hp and torque will do off the dyno at a given throttle openings. I cannot convey enough that the rpm range this single setup makes power at is very minimal and minute. I would be very surprised if someone with a perfectly tuned set of duals switched to a perfectly tuned single setup and noticed a gain in low end power. I personally ran the single carb and a single pipe for 2 years before moving on to bigger and better power making parts. This is my opinion as you so eloquently put it. However, its an opinion based on some supporting facts as opposed to word of mouth or just someone else's opinion. People will tell you to stick to duals, but I can tell you why you should stick to duals. Your gonna see a bigger gain from getting a better set of low-end pipes and a cool head than you will from that single carb anyway. So focus your money and time towards something that will actually get you what you want power wise.