well the reason the other one put down more power was because of many things
1. Aftercooled kit
2. saleen heat exchanger
3. 12 psi pulley
4. 5 speed
5. headers, TB spacer, coolant bypass, and a bunch of other small things that add up.

im pleased with my results tho! most people running the SO kit on their autos only make about 260 rwhp.....i made 285 with the dyno tune.