So I came across a 1717 castle motor , I believe they are 1650kv . I know it's not meant for the Kraton but I want to throw in there for some testing. Can you guys reccomend me a good pinion size with the stock spur , maybe a few options to reach over 65mph ? , I have 4s ,5s and 6s Lipos. I'd like to be around 50+mph on the 4s and 65+ using the 5 or 6s .