Space headaches

[Tobyw]

Hi,

Just picked up a DEX410 (moved away from schumacher) and loving it. I am struggling (like most owners) to install everything in the tight space. My 120a speedo is just to big so I am thinking of swapping to a smaller 70a esc. So here is my question:

Can I run a speed passion reventon R with a 5.5t motor? Will it overheat and keep cutting out? Racing on astroturf all year round.

Thoughts or any suggestions on ways to cram stuff in are welcome. I have a spektrum sr410 Rx and there isn't one much smaller than that. Current speedo is a turnigy trackstar 120a

Cheers