1. I doubt you need ZX14 injectors, you could probably get away with ZX10 pretty easy.
2. Are you turbo?
3. You'll need to replace everything rubber with an E85 compatible rubber.
4. If you do all of that, you'll also need to upgrade your fuel pump.
5. I doubt any ZX14 injectors are going to work as a direct swap due to the size restrictions with the 600 throttle bodies versus the 1400 throttle bodies. (37mm versus 44mm)