I have a very similar combo besides fuel injection: edelbrock performer heads, trick flow rockers and springs, BBK ssi intake, & long tubes. Not sure what cam is in the dang thing though.

Before i tuned it properly it made about 280hp on the dyno. (you'll lose a tiny bit on an auto) But it also made about the same in torque... And that's where the bite is. I have 3.55 gears on a T5 and shoot, it snaps necks with some good grip. More than enough for a daily in my opinion.