i myself have a spider mkll. the car runs great and fast BUT, i do not recommend them becoz, 1) parts are freaking expensive for such an old car. 2) kyosho is gonna stop making parts for them soon. 3) parts availability is a pain. 4) the brakes sucks, the pulley thats holding the brake rotor keeps getting strip when u brake real hard from a high speed. 5) sloppy everything. 6) the 2 speed housing is prone to stripping. 7) the 2 speed gears wobble and are not stable.
and thats all i can think of. but the price is very reasonable. 150 bucks for the kit and 370 for the car w/ gs11r engine. the engine alone costs 140 bucks! can u believe that? 140 bucks for a .10 engine. in my experience, this engine has a real long life on it. ive gone through 5 gallons without having compression problems.