You could stick the 400DF in the gearbox. Then it'll work fine.
not a bad idea. a little easier on the pocketbook.
i assume it will it fit in the gearbox without too much headache, right? (i havent even opened the model yet). stick with the stock prop then???
my main reason for upgrading off the bat is i dont have any brushed escs handy. i've got several brushless laying around though along with the 400DF.
thanks.