Always wanted to replace the big block in the Roadrunner with a Hemi and no kidding one of the big pluses is the ability to run large tube headers and not go anywhere near them when changing plugs. I have to use a combination of wrenches, extensions, etc. to change the plugs in the RR and its a serious pain in the @$$. And I'm seriously considering HP manifolds for the Barracuda even though its a small block because its going to be more of a driver than the RR so getting the last HP out of it isn't the top priority. Haven't 100% decided though.
Later, Jim