For the elevator you can use what is called a "DEPS"....dual elevator pushrod system. There is a nice DEPS package available from centralhobbies.com that comes with everything you need. Troy Newman has some great notes/articles on installing the DEPS properly as well, which I think are somewhere on Central's website. If you use the search function here on RCU you will find lots of threads with references and pictures of DEPS installations.

Good luck,
mark