I think the chances are pretty slim of getting 7000 on a 20x10. It is doing just under 7000 on a Mejzlik 20x8, so the increased load will just drive it lower. A pipe may pick up 300 rpm, but still not enough. I will be running it on a pipe soon, but I still think 7000 on a 22x10 is out of the question. According to Pe Revers calculator (pretty accurate) it would take 5.11 HP to turn that prop that fast. I do not even think the 46 will do it. It would take a 50cc. A DA 50 is rated at 5HP. That is alot of HP for anything under 50cc. The more I check, even an Evolution 35 would not come close to that. Sorry.