ok gang..i recently purchased a pro street luv truck,tubbed,4 link full cage,5500 stall ,tb,etc.....the truck has a 675 hp small block with kb 14 to 1s. i added a 678 roller .. ..i added billet electic water pump ,holley =bigger volume fuel pump..the truck was running 6 55with no spray before i got it....hooks like a bitch in heat.....i am trying to get her in the fives hoping to pick a tenth up here and their....i feel sure i can knock on 6 3o/6 40 now ...4 88 gear....with this set up iwas wondering how much nitrous i should use without pulling number three cylinder out which 400 are famous for and what nit shot i need relatively safe but good enuff for 5 90 s.ty