I have 80K on my 98 Blazer 4WD and still on stock plugs......so I want to do a makeover on the Spark Plugs, Plug Wires and the cap.....I would like to go to a performance brand and not stay stock......

 

you may not have a cap... It may be an ignition module or whatever its called. Anyway. If you want to go performance, get iridium plugs, and MSD wires.
If you want to change the ignition system itself also, MSD has about the best bang for the buck.

 

is there a one stop web site for the Blazer?