RE: Evader ext motor + esc suggested upgrade
I say find a xl-5 speed control new on auction, generally around 30 bucks and a titan 12 t motor for 20 bucks. This will get you going 30. Anything past that you should just look at a brushless system to go beyond 30mph reliably. the castle sidewinder combo would work best but its over you budget. A traxxas vxl combo can be had around 140 and is also a great deal and you can go as fast as you like there. The motor recommended above is fast but thats a lot of money for a brushed motor and it will need maintenance.