A "dune Banshee" would be good with Aggressive ported stock cyls. or the Serval. A 10mm build is gonna jump in cost considerably. I guess we really need to know exactly how you want to ride it. Like 60-70% duning go stk cyl or Serval. Like 60-70%-up dragging buddies then prolly a Cub. Play bike +4-6" arm, drag bike +8"- up. Along with shocks, the carbs, pipes, paddles etc. will determine how fast it will be and help you get the most out whatever package you decide to build.