E4ODS bulletproof ? HUH? I`ve been a Ford tech for 14 years and probably changed a hundred E4ODs throughout the years. I would not recommend one. The newer ones are much better than early 90s versions. The 460s are great motors, the only problem that really sucks on them is exhaust manifold bolts snapping off in the head. Be prepared to do some drilling and tapping here. I`d go C-6 if it were me.