i snaped a couple of pics of my conversion... the battery trays are from a caster fusion, the servo mount and radio box are from a losi 8, the motor mount is from Elite RC (Mugen mbx6)... the motor is a neu 1509 (1450kv) and the batteries are two 3s 3000mah in series to make 6s total... all run by a castle MMM... i also have a MMpro i might try...
as you can see its a tight fit but weight distribution is 50/50 F/R and L/R... you can go up to a 1512 size neu motor but not the 1515... you can use the same mount to do a traditional conversion with the battery on one side and the motor on the other as well...
i'm using a losi plastic spur (43t) which fits right onto the stock diff with a 13 pinion... this gearing should get to 35-40 mph with max motor rpm of 30-35k...
i haven't run it yet but i'm hoping it can make at least 15+ min...