lets see, some of my mods are....
-Swapped Green Microsizer controller buttons with Tomy Blue ones
-Custom done Black wheels (not painted but stripped)
-Custom made motor Heat sink (made from Bullet heat sink)
-just got done putting solid copper core wire
When i drag:
-white KIT racer hard tires
-Blue plastic KIT racer tires up front (made em to fit)
AND tomorrow i will be resoldering my PCB wires in the car because i did a crappy job the last time a resoldered it....

(actually use ZZ red gears)