I have a banshee every thing stock except toomey t5s k&n pod air filters air box delete I was thinking of getting my motor done I ride dunes only I like doing hills ,tree shots ,drag racing friends . What kind of build would you recommend like for example 4 mil 421 serval I want a pump gas reliable build and could you give me a rough estimate of how much something like that would cost for parts and what most people charge for labor ,thanks