I have a few dromidas all brushless. First the stock transmitter can be used with the Dromida RX18 3-Channel Brushless Receiver. You will also need the Dromida Universal Servo Mount. I would also get the aluminum drivetrain upgrade kit but not use the aluminum spur. On the cheap I would go with one of the 2435 4800KV 4P Sensorless Brushless Motor w/ 25A ESC combos on Ebay. Also a SDMD12M06 Steel Pinion Gear 12T .6 Module 2mm Shaft. The small brushless motors will need 2.5mm bolts or screws to mount them.