Those numbers are darn impressive. I'm thinking you changed pulleys' because you couldn't have gotten that out of the stock JRSC setup for the SVT being that it's a fixed displacement blower.
Definately sounds like a smaller pulley setup-good numbers for the SVT! I recently redid my H2O injection system (went from 1 to 2 nozzles) and installed a new tune from Tom. Hope to slightly better my last dyno of 234whp/185tq. I have decided not to install an even smaller pulley as I am getting plenty of boost now and don't want to push the motor any harder.
2002 SVT JRSC W/mods 5.7crank & 3" blower, FC TB, Predator dyno tuned by Tom, H2O injection, 42lb injectors/mafs, custom short intake.