Upgrading to LSD and other suspension mods for improved handling

I'm looking to upgrade my 2015 Toyota 86 with some suspension mods to improve its handling. Specifically, I'm considering a limited-slip differential (LSD) to reduce wheel spin and improve traction. What are some reputable brands or models that have worked well for others in the community? Have any members had success with other suspension upgrades like sway bars or coilovers?