Looking to upgrade my current 2005 R/T coil setup to a newer harness and 5.7/6.1 coils and new spark plugs (I know will have to upgrade the valve covers from the aluminum ones to current plastic/composites ones). What is the best spark plug to go with? Is it the Champion copper OEM ones or something better, could really use some advice for those using other plugs.
ALSO anyone selling a set of 8 of 6.1 coils packs?
Thank you Mopar family