Will be fine with a torsen LSD.. def new clutch and flywheel.what are your goals? i think SVT internals can hold ~250-300whp as they are forged
stock diffs fail and should be upgraded to Quife and while your in there do a clutch and or flywheel.
other things you probably want to do.
poly motor mounts
poly control arm bushings
good springs/shocks
good tires