Very good numbers. I've seen your car many times, the gold Dart. I think your combo is a little less "street" than mine but it's still pretty stout for less than 400".
I have a 4.30 gear that I took out and replaced with the 4.10. If/when I get the car out I'll see what it does but after changing it out it never felt as quick off the line. It's only a few % difference but it's noticeable.
In regards to intake manifolds, the steeper gear gets them into the sweet spot that much sooner.
