converting a XB8 to brushless

[captain harlock]

I'm actually planning to use 6s to beat up someone I know who happens to brag about making the highest speedruns at our track and that no one is able to give him and equal match. He is using nitro ( if you still have an idea about this outdated technology), too.

A guy here by the neckname " virusss" was able to push his LSP-R to 50mph+ with only a 1930/8 and 4s TrakPower lipos.

If that setup made the heavy MT go this far, I wonder what a setup like a 1940/7 + 6s 4900mah FlightPower is gonna push the poor MBX-5R to?..:)