If I plan on a build up for nitrous is it necessary to get a new crank? How much will the stock one hold?

 

what else is done to motor? how much power is it making off the bottle? if its fairly stock with forged pistons and rods i personally would feel fine with a 200 shot, some poeple will disagree im sure though.... but if your pulling 500 HP out of it without nitrous then that changes a few things....