The injectors will be fine. If you are running cats you'll want to remove them or not run leaded gas all the time. The O2's will fry fairly quickly depending on the amount of lead in the gasoline (grams). Sparkplugs youll just want to replace or atleast check every 10-15k
"Do you guys put the key in "balls down", or up?" -BobbyT 10:28:19 03/06/09