If I were charging $500, I too would make it sound like it can't be done by yourself. Autolites are the same thing as motorcraft,,, though bosch 4+ plugs are crap (atleast for our cars), I'm sure their normal plugs are OK, though you must have double platinum for our cars.

98.5 SVT 91 Escort GT (almost sold) 96 ATX Zetec (i brake to watch you swerve) FS: SVT rear sway bar WTB: Very cheap beater CEG Dragon Run - October 13-15