rebuilding crt.5 need suggestions

[nitro28]

I recently stole my Mamba max esc from my crt.5 to use in an e-maxx build, then I decided to sell the mamba max motor too. I was running it with a 7700kv on 2s because I had one left over from another car. Yes, it did get pretty hot (170's) So now I am going to rebuild with a new more appropriate brushless system. My main goal is to get this thing to an absolute maximum top speed. I have an e-maxx and hyper 7 for off road bashing etc, so I just want to see how fast I can get this to go. I was probably hitting 50mph with the 7700kv and 2s. I would like 70+. I was thinking maybe a velineon or xcelorin system maybe. But I am open to suggestions for any combo that is not super high priced. Here is what the car looked like with the mamba:



I will be using the Jaco 1/10 truck foams, because the stock rear buggy wheels just ballooned up way to much at top speed.