Ok so I've been scouring the net trying to find the length of the 5.0's stock injector. I was retarded and didn't measure when I had them out to swap the manifolds so tonight I decided to pull the rail again and measure for myself. 60mm o-ring to o-ring. While this might seem like an insignificant discovery to some, some might find this useful. This discovery means that GT500 injectors will not work without some sort of modification. You could shorten the length of the spacers that go between the rail and manifold, but on stock manifold cars this could present a space issue between the fuel line and the neck of the manifold. I'm also currently digging into the spark plug dilemma that I've discovered as well. I'm refuse to believe we don't share plugs with any other motor, part of that is attributed to this Plugs for 05+ Hemi and this Plugs for 2011+ 5.0 The part numbers are the same. So wish me luck guys...I'm off to the dodge forums to see what other options might exist.