This is the Big Black Brandt X(10) that PML offers. It is a scale high power kit that takes 29mm I200's to 54mm J800T as a stock kit. The larger 54mm extended Kwik-Switch must be purchased to run the 54mm "Mega System" which will fit the 1706 and the 54mm/2560 K700W motor. I did not purchase this and built the kit close to stock. The kit came from RocketSilo all boxed up, and it is so ...