There is no more an upgrade to inventor fusion 2014 so there is no more a Fusion link for Autocad. Inventor Fusion upgrade to Fusion 360 a program that has nothing to do with Inventor Fusion, Fusion 360 is in the cloud and I think you don t have any plug in for Autocad to make changes easily and fast. Its a pitty they kill such an amazing program.
I am still using Autocad 2013 for that reason =). Also Fusion 360 runs only in 64 bits. Very dissapointed with 2014 products in general.
You can read what it says here
http://labs.autodesk.com/technologies/fusion