Kyosho Lazer ZX-5's
 

Kyosho Lazer ZX-5's as the title says ive had mine since christmas and love racing it but was wondering if it can handle a brushless system to make it abit more fun of the track i was thinking maybe the midle mamba package on 6 cell and maybe 3 cell lipo for when im not racing

so would it cope with this kind of power

Yep, the Mamba Max 5700 setup with 3s lipos is the best choice and the fastest.

but will the car handdle it is what i really want to now

Sure, man. However, the 5700 will be quite aggressive on your drivetrain.
The 4600 is your choice. Torque, delicate and cool.
Here's a review of the systems:
http://www.beatyourtruck.com/prodreview-mambamax.html