Not hard to do. Just remove the door panel. A few screws hold in the factory speaker, no big deal. There should be a how to for removing the door panel on the main page somewhere.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods