cool truck, I loved my 03 Lightning. Of course, the mod bug can bite hard, so watch it. I initially wanted to be in the 400 rwhp-500 rwtq range, but that got boring pretty fast. Ended up at 621/708 SAE rwhp/rwtq and it ran 11.20's on the street tune. Should have gone 10's on the race tune, but never ran it that way.
Have fun, ton of potential there. Plus, even at the 621/708 range mine was a 20000 miles per year driver, rain or not. Plus I towed cars/trailers a fair amount with no issues.
Jody