I will post a few links to what i have fitted to mine. I run a Carisma GTB but the electrics can be used in the EMB.
Batteries, this is what 98% of people run
http://cdn.hobbyking.com/hobbyking/s...turnigy%202200
I run this servo and its lightening quick! And its spec is better than anything out there for the money, its just incredible for the price
http://cdn.hobbyking.com/hobbyking/s...arehouse_.html
ESC's, both the 35amp & 60amp have the same footprint, the 60amp is a few mm's higher
http://cdn.hobbyking.com/hobbyking/s...arehouse_.html
http://cdn.hobbyking.com/hobbyking/s...arehouse_.html
Motors wise if i was you and you wanted to get going for minimal cost then the Carisma motors are brilliant. Either the 4500kv (i have one and its spot on) or the Carisma 5700kv (i have one also). I now run a Leopard 5800kv 4 pole motor and that's incredibly smooth! Personally i wouldnt go for the 6800kv Carisma as thats probably going to be a little high for most tracks your probably race on.
http://www.tracksidespares.co.uk/pro...rushless-motor
http://www.tracksidespares.co.uk/pro...rushless-motor
http://www.tracksidespares.co.uk/pro...nsorless-motor
I thought i would give you some links, trying to find stuff blind is difficult. I wont comment on the actual car hop ups as i run a GTB but these electrics are pretty much spot on and will get you going at a competitive level