Why would you need the source code? I don't recommend using it at all, only the API (if needed).
As they say, "Why reinvent the wheel when it is already done for you?". So. This code is needed to ensure that would be easier to implement many of the subtleties mod. This source code IC2 and GT in very many points will accelerate and simplify development. In the case of transferring a copy of the source code, I undertake not to distribute it under any circumstances, since it does not make any sense. My interest is only to accelerate the development process.