I don't have much info on these trucks, seeing how I know little about them. but from reading, I think your talking about the 2nd gen Lightnings.

My neighbor has one, with a pully swap, and he loves it.
And another one of my friends has one, and he has basic bolt-on's and he ran 12.7s on his first run. (basically tuner,exhaust,Nitto555rs, pully, intake, and some other things I'm forgetting) I'm not sure about on a stock Eaton, but maybe a ported one, or def. a Kenny Bell you could get 500whp. But my friend didn't put anywhere close that in Hp. IIRC he's 420's-430s...

I don't know the name of the forum, but Goat or someone else could tell you that. You can basically read/or tell someone what you have, and they'll tell you what it'll run. It's bench racing at it's finest.

Good luck with your choice.