I like the Akkon headlights and tailights. As a new owner myself, I think that will be one of my first mods to help distinguish it from all the other Fusions on the highway.
So far, the only mod I've done is a Steeda Strut Tower Brace which helped the handling immensely.
I'm going to get some touch up paint today and cover up a few chips/scratches the previous owner neglected.
Other than that, I changed out the air filter and cabin air filter and they both were filthy for only having 34,000 miles on them!