Is It possible porting a custom simulation physic

Hi folks,
I have developed a racing game in C + + with Ogre3D and I would like to know if it is possible to port it UE4 without using blueprint.
I saw that version 4.2 will support 'vehicles, but I have created a customized physical engine physx 3.3 based , with softbody, spring model, suspension, gear, differential, made by me that I would use then without lose all my work.
Thanks in advance. and sorry for my english.

It should be perfectly possible to take existing C++ vehicle sim code and make it work with UE4, you would just be directly updating the position of the chassis and the wheels each frame, and could use our vehicle work in 4.2 for an example of how to integrate that.