To remove the valve cover all you need is a 8mm socket, 5/16 extended socket, and if it is the first time removing the valve cover maybe a pry bar.

BTW Darrel those cam gears look familiar.

Hector 2003 Rally Red Mitsubishi Evolution VIII 257HP/259TQ 2005 Lapis Blue Mazda 6s RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED 160HP/141TQ