i am not to sure what you think is so wrong with your plugs maybe i missed somthing or its the pics. just looks like you are running a lil rich in 5 out of 6 holes
Mystique 98 ls T-red
MTX
B&G springs
Turbendz y-pipe (running test pipe)
Trubendz cat back with flowmaster muffler
Costume intake with K&N filter
B&M shifter
Magstar wires