From my understanding the current supercharger for the 3.0 that gives about 70 hp increase and the 3.3 is the same engine just bored out, so it should'nt take much change for trd to make the older supercharger version work. The sport package options shows that there is plans to make the solara a racer friendly car. It would'nt make any sense that they would'nt. Currenty you can get around 100 hp with trd mods, you know it going to be more for 3.3, so yeah, more like atleast 325+.
I just hope trd puts out a supercharger with more than the current 4 psi boost.