On this unit what other pieces would I need to be able to attach it to my furuno nav touch 2? than

Furuno connects to FusionLink via ethernet. So this particular stereo would not be compatible. You will need one of the MS7** series or the new Apollo with ethernet. https://www.furunousa.com/-/media/sites/furuno/document_library/technical_info/interfacing_and_installation/interfacing_and_installation/navnet_tztouch_and_tztouch2_fusion_link_setup_and_operation.pdf