^^ Sure it can withstand it.. Just not over time..
Its rarely the hard driving that kills the 5 speeds.. Its stress over time.. Mine finally went on a very VERY soft downshift - lugging in fourth to a rev-matched third.. My foot wasn't even off the clutch pedal when 3rd scattered.. Its just stress over time that kills them..
Mine lasted around 10k miles above 370 whp on the airboy.. (closer to higher 380's - good for consistent mid 119 traps). I never launched it harder than a 1.7x for fear of drivetrain nukeage.. Now I wish I had.. hah.