Thanks. I think that 4S will be enough. I currently drive the Savage Flux on 4S and it's all the power I need, besides the Savage Flux is heavier then the RC8T-e if I'm not mistaking.
I send some people (with stuff for sale) a PM, so I'll just wait to here their prices :). I have to say that this Tekin drives very smooth. My MMM is stuttering like crazy when I want to drive real slow.
Mugen MBX6Te RCM + Mugen MBX6e RCM + Savage Flux XL FLM + MERV all with Spectrum DX3S || WTS&WTB