I will be going with the SLP springs and shocks.
Will I need an adjustable Panhard bar as well because of the small drop?
What front Swaybar will best match these springs and do i need to change the rear as well?

 

There are a lot of SS's and Firehawks running around on those shocks and springs with the stock panhard bar. SLP matched that setup with a 35mm/21mm sway bar setup. Absolutely necessary? No. Preferable? The front is definitely preferable, but the rear is optional according to taste.