spark plug's on 2003 Cadillac CTS

where r they located

2 answers 1 comment
2003 cts spark plug installiation
http://s306.photobucket.com/albums/nn244/04deveni/CTS%20Spark%20Plug%20Change/
do i have to use ac-delco? because everywhere i go they keep telling me i have too. also when i was looking up the spark plugs shown in your install i find that it says i cant use that model. it says use model 5344. i have the 04' V6 3.6L