Nitrous on a 340 100 shot

For a 100 shot you could proabally just throw it on and be fine
Whats your total timming ?
You wanted it tuned to 9th degree before you spray it
You want a saftey so if the gas solenoid does not open the spray solenoid doesn't spray
Low fuel pressure saftey wouldn't be a bad idea
stock plugs and gap should be fine foe 100 hp
I would start 2 degrees retard from best tune on pump gas read the plugs
Race fuel you dont need to retard timming but i would to start
Less is more sneak up on where you want to be
You will love the thrill best part is its only on when you want