That depends on whether anyone else out there has tested their 600 on the same dyno, as they vary by up to 10%.
FZS600s are commonly assumed to make 95@ crank and 79-83 @ the rear wheel.
Do you have a dyno of what it put out before the mods? Any gains would then become far more meaningful.
But hey, as long as you're happy with the result and there are no flat spots
