I would like to do a tune up on my car, but I see no spark plugs or wires, what on 2003 Lincoln Navigator

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
need for a complete tune up.. Can I do this myself?
(2) Answers
yes. rec. performance type coils as replacement. accel supercoils are good as well as more cost effective than OEM replacements. rec. e3 spark plugs as replacement however any premium type plug will suffice.
rec. fuel system clean. ethanol treatment to 1 tank premium fuel.
rec. upgrade conventional air filter to high flow design(K&N).
rec. oil stabilizer treatment with next oil change.
Qualified Local Lincoln Shops
Qualified Lincoln Shops For This Repair